Cache package is pure infrastructure. Cache invalidates on create/delete from the API

pkg/cache/cache_manager.go

@@ -57,11 +57,31 @@ func (c *Cache) SetBytes(ctx context.Context, key string, value []byte, ttl time
 	return c.provider.Set(ctx, key, value, ttl)
 }
 
+// SetWithTags serializes and stores a value in the cache with the specified TTL and tags.
+func (c *Cache) SetWithTags(ctx context.Context, key string, value interface{}, ttl time.Duration, tags []string) error {
+	data, err := json.Marshal(value)
+	if err != nil {
+		return fmt.Errorf("failed to serialize: %w", err)
+	}
+
+	return c.provider.SetWithTags(ctx, key, data, ttl, tags)
+}
+
+// SetBytesWithTags stores raw bytes in the cache with the specified TTL and tags.
+func (c *Cache) SetBytesWithTags(ctx context.Context, key string, value []byte, ttl time.Duration, tags []string) error {
+	return c.provider.SetWithTags(ctx, key, value, ttl, tags)
+}
+
 // Delete removes a key from the cache.
 func (c *Cache) Delete(ctx context.Context, key string) error {
 	return c.provider.Delete(ctx, key)
 }
 
+// DeleteByTag removes all keys associated with the given tag.
+func (c *Cache) DeleteByTag(ctx context.Context, tag string) error {
+	return c.provider.DeleteByTag(ctx, tag)
+}
+
 // DeleteByPattern removes all keys matching the pattern.
 func (c *Cache) DeleteByPattern(ctx context.Context, pattern string) error {
 	return c.provider.DeleteByPattern(ctx, pattern)

pkg/cache/provider.go

@@ -15,9 +15,17 @@ type Provider interface {
 	// If ttl is 0, the item never expires.
 	Set(ctx context.Context, key string, value []byte, ttl time.Duration) error
 
+	// SetWithTags stores a value in the cache with the specified TTL and tags.
+	// Tags can be used to invalidate groups of related keys.
+	// If ttl is 0, the item never expires.
+	SetWithTags(ctx context.Context, key string, value []byte, ttl time.Duration, tags []string) error
+
 	// Delete removes a key from the cache.
 	Delete(ctx context.Context, key string) error
 
+	// DeleteByTag removes all keys associated with the given tag.
+	DeleteByTag(ctx context.Context, tag string) error
+
 	// DeleteByPattern removes all keys matching the pattern.
 	// Pattern syntax depends on the provider implementation.
 	DeleteByPattern(ctx context.Context, pattern string) error

pkg/cache/provider_memcache.go

@@ -2,6 +2,7 @@ package cache
 
 import (
 	"context"
+	"encoding/json"
 	"fmt"
 	"time"
 
@@ -97,8 +98,115 @@ func (m *MemcacheProvider) Set(ctx context.Context, key string, value []byte, tt
 	return m.client.Set(item)
 }
 
+// SetWithTags stores a value in the cache with the specified TTL and tags.
+// Note: Tag support in Memcache is limited and less efficient than Redis.
+func (m *MemcacheProvider) SetWithTags(ctx context.Context, key string, value []byte, ttl time.Duration, tags []string) error {
+	if ttl == 0 {
+		ttl = m.options.DefaultTTL
+	}
+
+	expiration := int32(ttl.Seconds())
+
+	// Set the main value
+	item := &memcache.Item{
+		Key:        key,
+		Value:      value,
+		Expiration: expiration,
+	}
+	if err := m.client.Set(item); err != nil {
+		return err
+	}
+
+	// Store tags for this key
+	if len(tags) > 0 {
+		tagsData, err := json.Marshal(tags)
+		if err != nil {
+			return fmt.Errorf("failed to marshal tags: %w", err)
+		}
+
+		tagsItem := &memcache.Item{
+			Key:        fmt.Sprintf("cache:tags:%s", key),
+			Value:      tagsData,
+			Expiration: expiration,
+		}
+		if err := m.client.Set(tagsItem); err != nil {
+			return err
+		}
+
+		// Add key to each tag's key list
+		for _, tag := range tags {
+			tagKey := fmt.Sprintf("cache:tag:%s", tag)
+
+			// Get existing keys for this tag
+			var keys []string
+			if item, err := m.client.Get(tagKey); err == nil {
+				_ = json.Unmarshal(item.Value, &keys)
+			}
+
+			// Add current key if not already present
+			found := false
+			for _, k := range keys {
+				if k == key {
+					found = true
+					break
+				}
+			}
+			if !found {
+				keys = append(keys, key)
+			}
+
+			// Store updated key list
+			keysData, err := json.Marshal(keys)
+			if err != nil {
+				continue
+			}
+
+			tagItem := &memcache.Item{
+				Key:        tagKey,
+				Value:      keysData,
+				Expiration: expiration + 3600, // Give tag lists longer TTL
+			}
+			_ = m.client.Set(tagItem)
+		}
+	}
+
+	return nil
+}
+
 // Delete removes a key from the cache.
 func (m *MemcacheProvider) Delete(ctx context.Context, key string) error {
+	// Get tags for this key
+	tagsKey := fmt.Sprintf("cache:tags:%s", key)
+	if item, err := m.client.Get(tagsKey); err == nil {
+		var tags []string
+		if err := json.Unmarshal(item.Value, &tags); err == nil {
+			// Remove key from each tag's key list
+			for _, tag := range tags {
+				tagKey := fmt.Sprintf("cache:tag:%s", tag)
+				if tagItem, err := m.client.Get(tagKey); err == nil {
+					var keys []string
+					if err := json.Unmarshal(tagItem.Value, &keys); err == nil {
+						// Remove current key from the list
+						newKeys := make([]string, 0, len(keys))
+						for _, k := range keys {
+							if k != key {
+								newKeys = append(newKeys, k)
+							}
+						}
+						// Update the tag's key list
+						if keysData, err := json.Marshal(newKeys); err == nil {
+							tagItem.Value = keysData
+							_ = m.client.Set(tagItem)
+						}
+					}
+				}
+			}
+		}
+		// Delete the tags key
+		_ = m.client.Delete(tagsKey)
+	}
+
+	// Delete the actual key
 	err := m.client.Delete(key)
 	if err == memcache.ErrCacheMiss {
 		return nil
@@ -106,6 +214,38 @@ func (m *MemcacheProvider) Delete(ctx context.Context, key string) error {
 	return err
 }
 
+// DeleteByTag removes all keys associated with the given tag.
+func (m *MemcacheProvider) DeleteByTag(ctx context.Context, tag string) error {
+	tagKey := fmt.Sprintf("cache:tag:%s", tag)
+
+	// Get all keys associated with this tag
+	item, err := m.client.Get(tagKey)
+	if err == memcache.ErrCacheMiss {
+		return nil
+	}
+	if err != nil {
+		return err
+	}
+
+	var keys []string
+	if err := json.Unmarshal(item.Value, &keys); err != nil {
+		return fmt.Errorf("failed to unmarshal tag keys: %w", err)
+	}
+
+	// Delete all keys
+	for _, key := range keys {
+		_ = m.client.Delete(key)
+		// Also delete the tags key for this cache key
+		tagsKey := fmt.Sprintf("cache:tags:%s", key)
+		_ = m.client.Delete(tagsKey)
+	}
+
+	// Delete the tag key itself
+	_ = m.client.Delete(tagKey)
+
+	return nil
+}
+
 // DeleteByPattern removes all keys matching the pattern.
 // Note: Memcache does not support pattern-based deletion natively.
 // This is a no-op for memcache and returns an error.

pkg/cache/provider_memory.go

@@ -15,6 +15,7 @@ type memoryItem struct {
 	Expiration time.Time
 	LastAccess time.Time
 	HitCount   int64
+	Tags       []string
 }
 
 // isExpired checks if the item has expired.
@@ -27,11 +28,12 @@ func (m *memoryItem) isExpired() bool {
 
 // MemoryProvider is an in-memory implementation of the Provider interface.
 type MemoryProvider struct {
-	mu      sync.RWMutex
+	mu        sync.RWMutex
-	items   map[string]*memoryItem
+	items     map[string]*memoryItem
-	options *Options
+	tagToKeys map[string]map[string]struct{} // tag -> set of keys
-	hits    atomic.Int64
+	options   *Options
-	misses  atomic.Int64
+	hits      atomic.Int64
+	misses    atomic.Int64
 }
 
 // NewMemoryProvider creates a new in-memory cache provider.
@@ -44,8 +46,9 @@ func NewMemoryProvider(opts *Options) *MemoryProvider {
 	}
 
 	return &MemoryProvider{
-		items:   make(map[string]*memoryItem),
+		items:     make(map[string]*memoryItem),
-		options: opts,
+		tagToKeys: make(map[string]map[string]struct{}),
+		options:   opts,
 	}
 }
 
@@ -114,15 +117,116 @@ func (m *MemoryProvider) Set(ctx context.Context, key string, value []byte, ttl
 	return nil
 }
 
+// SetWithTags stores a value in the cache with the specified TTL and tags.
+func (m *MemoryProvider) SetWithTags(ctx context.Context, key string, value []byte, ttl time.Duration, tags []string) error {
+	m.mu.Lock()
+	defer m.mu.Unlock()
+
+	if ttl == 0 {
+		ttl = m.options.DefaultTTL
+	}
+
+	var expiration time.Time
+	if ttl > 0 {
+		expiration = time.Now().Add(ttl)
+	}
+
+	// Check max size and evict if necessary
+	if m.options.MaxSize > 0 && len(m.items) >= m.options.MaxSize {
+		if _, exists := m.items[key]; !exists {
+			m.evictOne()
+		}
+	}
+
+	// Remove old tag associations if key exists
+	if oldItem, exists := m.items[key]; exists {
+		for _, tag := range oldItem.Tags {
+			if keySet, ok := m.tagToKeys[tag]; ok {
+				delete(keySet, key)
+				if len(keySet) == 0 {
+					delete(m.tagToKeys, tag)
+				}
+			}
+		}
+	}
+
+	// Store the item
+	m.items[key] = &memoryItem{
+		Value:      value,
+		Expiration: expiration,
+		LastAccess: time.Now(),
+		Tags:       tags,
+	}
+
+	// Add new tag associations
+	for _, tag := range tags {
+		if m.tagToKeys[tag] == nil {
+			m.tagToKeys[tag] = make(map[string]struct{})
+		}
+		m.tagToKeys[tag][key] = struct{}{}
+	}
+
+	return nil
+}
+
 // Delete removes a key from the cache.
 func (m *MemoryProvider) Delete(ctx context.Context, key string) error {
 	m.mu.Lock()
 	defer m.mu.Unlock()
 
+	// Remove tag associations
+	if item, exists := m.items[key]; exists {
+		for _, tag := range item.Tags {
+			if keySet, ok := m.tagToKeys[tag]; ok {
+				delete(keySet, key)
+				if len(keySet) == 0 {
+					delete(m.tagToKeys, tag)
+				}
+			}
+		}
+	}
+
 	delete(m.items, key)
 	return nil
 }
 
+// DeleteByTag removes all keys associated with the given tag.
+func (m *MemoryProvider) DeleteByTag(ctx context.Context, tag string) error {
+	m.mu.Lock()
+	defer m.mu.Unlock()
+
+	// Get all keys associated with this tag
+	keySet, exists := m.tagToKeys[tag]
+	if !exists {
+		return nil // No keys with this tag
+	}
+
+	// Delete all items with this tag
+	for key := range keySet {
+		if item, ok := m.items[key]; ok {
+			// Remove this tag from the item's tag list
+			newTags := make([]string, 0, len(item.Tags))
+			for _, t := range item.Tags {
+				if t != tag {
+					newTags = append(newTags, t)
+				}
+			}
+
+			// If item has no more tags, delete it
+			// Otherwise update its tags
+			if len(newTags) == 0 {
+				delete(m.items, key)
+			} else {
+				item.Tags = newTags
+			}
+		}
+	}
+
+	// Remove the tag mapping
+	delete(m.tagToKeys, tag)
+	return nil
+}
+
 // DeleteByPattern removes all keys matching the pattern.
 func (m *MemoryProvider) DeleteByPattern(ctx context.Context, pattern string) error {
 	m.mu.Lock()

pkg/cache/provider_redis.go

@@ -103,9 +103,93 @@ func (r *RedisProvider) Set(ctx context.Context, key string, value []byte, ttl t
 	return r.client.Set(ctx, key, value, ttl).Err()
 }
 
+// SetWithTags stores a value in the cache with the specified TTL and tags.
+func (r *RedisProvider) SetWithTags(ctx context.Context, key string, value []byte, ttl time.Duration, tags []string) error {
+	if ttl == 0 {
+		ttl = r.options.DefaultTTL
+	}
+
+	pipe := r.client.Pipeline()
+
+	// Set the value
+	pipe.Set(ctx, key, value, ttl)
+
+	// Add key to each tag's set
+	for _, tag := range tags {
+		tagKey := fmt.Sprintf("cache:tag:%s", tag)
+		pipe.SAdd(ctx, tagKey, key)
+		// Set expiration on tag set (longer than cache items to ensure cleanup)
+		if ttl > 0 {
+			pipe.Expire(ctx, tagKey, ttl+time.Hour)
+		}
+	}
+
+	// Store tags for this key for later cleanup
+	if len(tags) > 0 {
+		tagsKey := fmt.Sprintf("cache:tags:%s", key)
+		pipe.SAdd(ctx, tagsKey, tags)
+		if ttl > 0 {
+			pipe.Expire(ctx, tagsKey, ttl)
+		}
+	}
+
+	_, err := pipe.Exec(ctx)
+	return err
+}
+
 // Delete removes a key from the cache.
 func (r *RedisProvider) Delete(ctx context.Context, key string) error {
-	return r.client.Del(ctx, key).Err()
+	pipe := r.client.Pipeline()
+
+	// Get tags for this key
+	tagsKey := fmt.Sprintf("cache:tags:%s", key)
+	tags, err := r.client.SMembers(ctx, tagsKey).Result()
+	if err == nil && len(tags) > 0 {
+		// Remove key from each tag set
+		for _, tag := range tags {
+			tagKey := fmt.Sprintf("cache:tag:%s", tag)
+			pipe.SRem(ctx, tagKey, key)
+		}
+		// Delete the tags key
+		pipe.Del(ctx, tagsKey)
+	}
+
+	// Delete the actual key
+	pipe.Del(ctx, key)
+
+	_, err = pipe.Exec(ctx)
+	return err
+}
+
+// DeleteByTag removes all keys associated with the given tag.
+func (r *RedisProvider) DeleteByTag(ctx context.Context, tag string) error {
+	tagKey := fmt.Sprintf("cache:tag:%s", tag)
+
+	// Get all keys associated with this tag
+	keys, err := r.client.SMembers(ctx, tagKey).Result()
+	if err != nil {
+		return err
+	}
+
+	if len(keys) == 0 {
+		return nil
+	}
+
+	pipe := r.client.Pipeline()
+
+	// Delete all keys and their tag associations
+	for _, key := range keys {
+		pipe.Del(ctx, key)
+		// Also delete the tags key for this cache key
+		tagsKey := fmt.Sprintf("cache:tags:%s", key)
+		pipe.Del(ctx, tagsKey)
+	}
+
+	// Delete the tag set itself
+	pipe.Del(ctx, tagKey)
+
+	_, err = pipe.Exec(ctx)
+	return err
 }
 
 // DeleteByPattern removes all keys matching the pattern.

pkg/cache/query_cache_test.go

@@ -1,151 +0,0 @@
-package cache
-
-import (
-	"context"
-	"testing"
-	"time"
-
-	"github.com/bitechdev/ResolveSpec/pkg/common"
-)
-
-func TestBuildQueryCacheKey(t *testing.T) {
-	filters := []common.FilterOption{
-		{Column: "name", Operator: "eq", Value: "test"},
-		{Column: "age", Operator: "gt", Value: 25},
-	}
-	sorts := []common.SortOption{
-		{Column: "name", Direction: "asc"},
-	}
-
-	// Generate cache key
-	key1 := BuildQueryCacheKey("users", filters, sorts, "status = 'active'", "")
-
-	// Same parameters should generate same key
-	key2 := BuildQueryCacheKey("users", filters, sorts, "status = 'active'", "")
-
-	if key1 != key2 {
-		t.Errorf("Expected same cache keys for identical parameters, got %s and %s", key1, key2)
-	}
-
-	// Different parameters should generate different key
-	key3 := BuildQueryCacheKey("users", filters, sorts, "status = 'inactive'", "")
-
-	if key1 == key3 {
-		t.Errorf("Expected different cache keys for different parameters, got %s and %s", key1, key3)
-	}
-}
-
-func TestBuildExtendedQueryCacheKey(t *testing.T) {
-	filters := []common.FilterOption{
-		{Column: "name", Operator: "eq", Value: "test"},
-	}
-	sorts := []common.SortOption{
-		{Column: "name", Direction: "asc"},
-	}
-	expandOpts := []interface{}{
-		map[string]interface{}{
-			"relation": "posts",
-			"where":    "status = 'published'",
-		},
-	}
-
-	// Generate cache key
-	key1 := BuildExtendedQueryCacheKey("users", filters, sorts, "", "", expandOpts, false, "", "")
-
-	// Same parameters should generate same key
-	key2 := BuildExtendedQueryCacheKey("users", filters, sorts, "", "", expandOpts, false, "", "")
-
-	if key1 != key2 {
-		t.Errorf("Expected same cache keys for identical parameters")
-	}
-
-	// Different distinct value should generate different key
-	key3 := BuildExtendedQueryCacheKey("users", filters, sorts, "", "", expandOpts, true, "", "")
-
-	if key1 == key3 {
-		t.Errorf("Expected different cache keys for different distinct values")
-	}
-}
-
-func TestGetQueryTotalCacheKey(t *testing.T) {
-	hash := "abc123"
-	key := GetQueryTotalCacheKey(hash)
-
-	expected := "query_total:abc123"
-	if key != expected {
-		t.Errorf("Expected %s, got %s", expected, key)
-	}
-}
-
-func TestCachedTotalIntegration(t *testing.T) {
-	// Initialize cache with memory provider for testing
-	UseMemory(&Options{
-		DefaultTTL: 1 * time.Minute,
-		MaxSize:    100,
-	})
-
-	ctx := context.Background()
-
-	// Create test data
-	filters := []common.FilterOption{
-		{Column: "status", Operator: "eq", Value: "active"},
-	}
-	sorts := []common.SortOption{
-		{Column: "created_at", Direction: "desc"},
-	}
-
-	// Build cache key
-	cacheKeyHash := BuildQueryCacheKey("test_table", filters, sorts, "", "")
-	cacheKey := GetQueryTotalCacheKey(cacheKeyHash)
-
-	// Store a total count in cache
-	totalToCache := CachedTotal{Total: 42}
-	err := GetDefaultCache().Set(ctx, cacheKey, totalToCache, time.Minute)
-	if err != nil {
-		t.Fatalf("Failed to set cache: %v", err)
-	}
-
-	// Retrieve from cache
-	var cachedTotal CachedTotal
-	err = GetDefaultCache().Get(ctx, cacheKey, &cachedTotal)
-	if err != nil {
-		t.Fatalf("Failed to get from cache: %v", err)
-	}
-
-	if cachedTotal.Total != 42 {
-		t.Errorf("Expected total 42, got %d", cachedTotal.Total)
-	}
-
-	// Test cache miss
-	nonExistentKey := GetQueryTotalCacheKey("nonexistent")
-	var missedTotal CachedTotal
-	err = GetDefaultCache().Get(ctx, nonExistentKey, &missedTotal)
-	if err == nil {
-		t.Errorf("Expected error for cache miss, got nil")
-	}
-}
-
-func TestHashString(t *testing.T) {
-	input1 := "test string"
-	input2 := "test string"
-	input3 := "different string"
-
-	hash1 := hashString(input1)
-	hash2 := hashString(input2)
-	hash3 := hashString(input3)
-
-	// Same input should produce same hash
-	if hash1 != hash2 {
-		t.Errorf("Expected same hash for identical inputs")
-	}
-
-	// Different input should produce different hash
-	if hash1 == hash3 {
-		t.Errorf("Expected different hash for different inputs")
-	}
-
-	// Hash should be hex encoded SHA256 (64 characters)
-	if len(hash1) != 64 {
-		t.Errorf("Expected hash length of 64, got %d", len(hash1))
-	}
-}

pkg/resolvespec/cache_helpers.go

@@ -0,0 +1,118 @@
+package resolvespec
+
+import (
+	"context"
+	"crypto/sha256"
+	"encoding/hex"
+	"encoding/json"
+	"fmt"
+	"strings"
+	"time"
+
+	"github.com/bitechdev/ResolveSpec/pkg/cache"
+	"github.com/bitechdev/ResolveSpec/pkg/common"
+)
+
+// queryCacheKey represents the components used to build a cache key for query total count
+type queryCacheKey struct {
+	TableName      string                `json:"table_name"`
+	Filters        []common.FilterOption `json:"filters"`
+	Sort           []common.SortOption   `json:"sort"`
+	CustomSQLWhere string                `json:"custom_sql_where,omitempty"`
+	CustomSQLOr    string                `json:"custom_sql_or,omitempty"`
+	CursorForward  string                `json:"cursor_forward,omitempty"`
+	CursorBackward string                `json:"cursor_backward,omitempty"`
+}
+
+// cachedTotal represents a cached total count
+type cachedTotal struct {
+	Total int `json:"total"`
+}
+
+// buildQueryCacheKey builds a cache key from query parameters for total count caching
+func buildQueryCacheKey(tableName string, filters []common.FilterOption, sort []common.SortOption, customWhere, customOr string) string {
+	key := queryCacheKey{
+		TableName:      tableName,
+		Filters:        filters,
+		Sort:           sort,
+		CustomSQLWhere: customWhere,
+		CustomSQLOr:    customOr,
+	}
+
+	// Serialize to JSON for consistent hashing
+	jsonData, err := json.Marshal(key)
+	if err != nil {
+		// Fallback to simple string concatenation if JSON fails
+		return hashString(fmt.Sprintf("%s_%v_%v_%s_%s", tableName, filters, sort, customWhere, customOr))
+	}
+
+	return hashString(string(jsonData))
+}
+
+// buildExtendedQueryCacheKey builds a cache key for extended query options with cursor pagination
+func buildExtendedQueryCacheKey(tableName string, filters []common.FilterOption, sort []common.SortOption,
+	customWhere, customOr string, cursorFwd, cursorBwd string) string {
+
+	key := queryCacheKey{
+		TableName:      tableName,
+		Filters:        filters,
+		Sort:           sort,
+		CustomSQLWhere: customWhere,
+		CustomSQLOr:    customOr,
+		CursorForward:  cursorFwd,
+		CursorBackward: cursorBwd,
+	}
+
+	// Serialize to JSON for consistent hashing
+	jsonData, err := json.Marshal(key)
+	if err != nil {
+		// Fallback to simple string concatenation if JSON fails
+		return hashString(fmt.Sprintf("%s_%v_%v_%s_%s_%s_%s",
+			tableName, filters, sort, customWhere, customOr, cursorFwd, cursorBwd))
+	}
+
+	return hashString(string(jsonData))
+}
+
+// hashString computes SHA256 hash of a string
+func hashString(s string) string {
+	h := sha256.New()
+	h.Write([]byte(s))
+	return hex.EncodeToString(h.Sum(nil))
+}
+
+// getQueryTotalCacheKey returns a formatted cache key for storing/retrieving total count
+func getQueryTotalCacheKey(hash string) string {
+	return fmt.Sprintf("query_total:%s", hash)
+}
+
+// buildCacheTags creates cache tags from schema and table name
+func buildCacheTags(schema, tableName string) []string {
+	return []string{
+		fmt.Sprintf("schema:%s", strings.ToLower(schema)),
+		fmt.Sprintf("table:%s", strings.ToLower(tableName)),
+	}
+}
+
+// setQueryTotalCache stores a query total in the cache with schema and table tags
+func setQueryTotalCache(ctx context.Context, cacheKey string, total int, schema, tableName string, ttl time.Duration) error {
+	c := cache.GetDefaultCache()
+	cacheData := cachedTotal{Total: total}
+	tags := buildCacheTags(schema, tableName)
+
+	return c.SetWithTags(ctx, cacheKey, cacheData, ttl, tags)
+}
+
+// invalidateCacheForTags removes all cached items matching the specified tags
+func invalidateCacheForTags(ctx context.Context, tags []string) error {
+	c := cache.GetDefaultCache()
+
+	// Invalidate for each tag
+	for _, tag := range tags {
+		if err := c.DeleteByTag(ctx, tag); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}

pkg/resolvespec/handler.go

@@ -331,19 +331,17 @@ func (h *Handler) handleRead(ctx context.Context, w common.ResponseWriter, id st
 	// Use extended cache key if cursors are present
 	var cacheKeyHash string
 	if len(options.CursorForward) > 0 || len(options.CursorBackward) > 0 {
-		cacheKeyHash = cache.BuildExtendedQueryCacheKey(
+		cacheKeyHash = buildExtendedQueryCacheKey(
 			tableName,
 			options.Filters,
 			options.Sort,
-			"",    // No custom SQL WHERE in resolvespec
+			"", // No custom SQL WHERE in resolvespec
-			"",    // No custom SQL OR in resolvespec
+			"", // No custom SQL OR in resolvespec
-			nil,   // No expand options in resolvespec
-			false, // distinct not used here
 			options.CursorForward,
 			options.CursorBackward,
 		)
 	} else {
-		cacheKeyHash = cache.BuildQueryCacheKey(
+		cacheKeyHash = buildQueryCacheKey(
 			tableName,
 			options.Filters,
 			options.Sort,
@@ -351,10 +349,10 @@ func (h *Handler) handleRead(ctx context.Context, w common.ResponseWriter, id st
 			"", // No custom SQL OR in resolvespec
 		)
 	}
-	cacheKey := cache.GetQueryTotalCacheKey(cacheKeyHash)
+	cacheKey := getQueryTotalCacheKey(cacheKeyHash)
 
 	// Try to retrieve from cache
-	var cachedTotal cache.CachedTotal
+	var cachedTotal cachedTotal
 	err := cache.GetDefaultCache().Get(ctx, cacheKey, &cachedTotal)
 	if err == nil {
 		total = cachedTotal.Total
@@ -371,10 +369,9 @@ func (h *Handler) handleRead(ctx context.Context, w common.ResponseWriter, id st
 		total = count
 		logger.Debug("Total records (from query): %d", total)
 
-		// Store in cache
+		// Store in cache with schema and table tags
 		cacheTTL := time.Minute * 2 // Default 2 minutes TTL
-		cacheData := cache.CachedTotal{Total: total}
+		if err := setQueryTotalCache(ctx, cacheKey, total, schema, tableName, cacheTTL); err != nil {
-		if err := cache.GetDefaultCache().Set(ctx, cacheKey, cacheData, cacheTTL); err != nil {
 			logger.Warn("Failed to cache query total: %v", err)
 			// Don't fail the request if caching fails
 		} else {
@@ -464,6 +461,11 @@ func (h *Handler) handleCreate(ctx context.Context, w common.ResponseWriter, dat
 				return
 			}
 			logger.Info("Successfully created record with nested data, ID: %v", result.ID)
+			// Invalidate cache for this table
+			cacheTags := buildCacheTags(schema, tableName)
+			if err := invalidateCacheForTags(ctx, cacheTags); err != nil {
+				logger.Warn("Failed to invalidate cache for table %s: %v", tableName, err)
+			}
 			h.sendResponse(w, result.Data, nil)
 			return
 		}
@@ -480,6 +482,11 @@ func (h *Handler) handleCreate(ctx context.Context, w common.ResponseWriter, dat
 			return
 		}
 		logger.Info("Successfully created record, rows affected: %d", result.RowsAffected())
+		// Invalidate cache for this table
+		cacheTags := buildCacheTags(schema, tableName)
+		if err := invalidateCacheForTags(ctx, cacheTags); err != nil {
+			logger.Warn("Failed to invalidate cache for table %s: %v", tableName, err)
+		}
 		h.sendResponse(w, v, nil)
 
 	case []map[string]interface{}:
@@ -518,6 +525,11 @@ func (h *Handler) handleCreate(ctx context.Context, w common.ResponseWriter, dat
 				return
 			}
 			logger.Info("Successfully created %d records with nested data", len(results))
+			// Invalidate cache for this table
+			cacheTags := buildCacheTags(schema, tableName)
+			if err := invalidateCacheForTags(ctx, cacheTags); err != nil {
+				logger.Warn("Failed to invalidate cache for table %s: %v", tableName, err)
+			}
 			h.sendResponse(w, results, nil)
 			return
 		}
@@ -541,6 +553,11 @@ func (h *Handler) handleCreate(ctx context.Context, w common.ResponseWriter, dat
 			return
 		}
 		logger.Info("Successfully created %d records", len(v))
+		// Invalidate cache for this table
+		cacheTags := buildCacheTags(schema, tableName)
+		if err := invalidateCacheForTags(ctx, cacheTags); err != nil {
+			logger.Warn("Failed to invalidate cache for table %s: %v", tableName, err)
+		}
 		h.sendResponse(w, v, nil)
 
 	case []interface{}:
@@ -584,6 +601,11 @@ func (h *Handler) handleCreate(ctx context.Context, w common.ResponseWriter, dat
 				return
 			}
 			logger.Info("Successfully created %d records with nested data", len(results))
+			// Invalidate cache for this table
+			cacheTags := buildCacheTags(schema, tableName)
+			if err := invalidateCacheForTags(ctx, cacheTags); err != nil {
+				logger.Warn("Failed to invalidate cache for table %s: %v", tableName, err)
+			}
 			h.sendResponse(w, results, nil)
 			return
 		}
@@ -611,6 +633,11 @@ func (h *Handler) handleCreate(ctx context.Context, w common.ResponseWriter, dat
 			return
 		}
 		logger.Info("Successfully created %d records", len(v))
+		// Invalidate cache for this table
+		cacheTags := buildCacheTags(schema, tableName)
+		if err := invalidateCacheForTags(ctx, cacheTags); err != nil {
+			logger.Warn("Failed to invalidate cache for table %s: %v", tableName, err)
+		}
 		h.sendResponse(w, list, nil)
 
 	default:
@@ -661,6 +688,11 @@ func (h *Handler) handleUpdate(ctx context.Context, w common.ResponseWriter, url
 				return
 			}
 			logger.Info("Successfully updated record with nested data, rows: %d", result.AffectedRows)
+			// Invalidate cache for this table
+			cacheTags := buildCacheTags(schema, tableName)
+			if err := invalidateCacheForTags(ctx, cacheTags); err != nil {
+				logger.Warn("Failed to invalidate cache for table %s: %v", tableName, err)
+			}
 			h.sendResponse(w, result.Data, nil)
 			return
 		}
@@ -697,6 +729,11 @@ func (h *Handler) handleUpdate(ctx context.Context, w common.ResponseWriter, url
 		}
 
 		logger.Info("Successfully updated %d records", result.RowsAffected())
+		// Invalidate cache for this table
+		cacheTags := buildCacheTags(schema, tableName)
+		if err := invalidateCacheForTags(ctx, cacheTags); err != nil {
+			logger.Warn("Failed to invalidate cache for table %s: %v", tableName, err)
+		}
 		h.sendResponse(w, data, nil)
 
 	case []map[string]interface{}:
@@ -735,6 +772,11 @@ func (h *Handler) handleUpdate(ctx context.Context, w common.ResponseWriter, url
 				return
 			}
 			logger.Info("Successfully updated %d records with nested data", len(results))
+			// Invalidate cache for this table
+			cacheTags := buildCacheTags(schema, tableName)
+			if err := invalidateCacheForTags(ctx, cacheTags); err != nil {
+				logger.Warn("Failed to invalidate cache for table %s: %v", tableName, err)
+			}
 			h.sendResponse(w, results, nil)
 			return
 		}
@@ -758,6 +800,11 @@ func (h *Handler) handleUpdate(ctx context.Context, w common.ResponseWriter, url
 			return
 		}
 		logger.Info("Successfully updated %d records", len(updates))
+		// Invalidate cache for this table
+		cacheTags := buildCacheTags(schema, tableName)
+		if err := invalidateCacheForTags(ctx, cacheTags); err != nil {
+			logger.Warn("Failed to invalidate cache for table %s: %v", tableName, err)
+		}
 		h.sendResponse(w, updates, nil)
 
 	case []interface{}:
@@ -800,6 +847,11 @@ func (h *Handler) handleUpdate(ctx context.Context, w common.ResponseWriter, url
 				return
 			}
 			logger.Info("Successfully updated %d records with nested data", len(results))
+			// Invalidate cache for this table
+			cacheTags := buildCacheTags(schema, tableName)
+			if err := invalidateCacheForTags(ctx, cacheTags); err != nil {
+				logger.Warn("Failed to invalidate cache for table %s: %v", tableName, err)
+			}
 			h.sendResponse(w, results, nil)
 			return
 		}
@@ -827,6 +879,11 @@ func (h *Handler) handleUpdate(ctx context.Context, w common.ResponseWriter, url
 			return
 		}
 		logger.Info("Successfully updated %d records", len(list))
+		// Invalidate cache for this table
+		cacheTags := buildCacheTags(schema, tableName)
+		if err := invalidateCacheForTags(ctx, cacheTags); err != nil {
+			logger.Warn("Failed to invalidate cache for table %s: %v", tableName, err)
+		}
 		h.sendResponse(w, list, nil)
 
 	default:
@@ -873,6 +930,11 @@ func (h *Handler) handleDelete(ctx context.Context, w common.ResponseWriter, id
 				return
 			}
 			logger.Info("Successfully deleted %d records", len(v))
+			// Invalidate cache for this table
+			cacheTags := buildCacheTags(schema, tableName)
+			if err := invalidateCacheForTags(ctx, cacheTags); err != nil {
+				logger.Warn("Failed to invalidate cache for table %s: %v", tableName, err)
+			}
 			h.sendResponse(w, map[string]interface{}{"deleted": len(v)}, nil)
 			return
 
@@ -914,6 +976,11 @@ func (h *Handler) handleDelete(ctx context.Context, w common.ResponseWriter, id
 				return
 			}
 			logger.Info("Successfully deleted %d records", deletedCount)
+			// Invalidate cache for this table
+			cacheTags := buildCacheTags(schema, tableName)
+			if err := invalidateCacheForTags(ctx, cacheTags); err != nil {
+				logger.Warn("Failed to invalidate cache for table %s: %v", tableName, err)
+			}
 			h.sendResponse(w, map[string]interface{}{"deleted": deletedCount}, nil)
 			return
 
@@ -940,6 +1007,11 @@ func (h *Handler) handleDelete(ctx context.Context, w common.ResponseWriter, id
 				return
 			}
 			logger.Info("Successfully deleted %d records", deletedCount)
+			// Invalidate cache for this table
+			cacheTags := buildCacheTags(schema, tableName)
+			if err := invalidateCacheForTags(ctx, cacheTags); err != nil {
+				logger.Warn("Failed to invalidate cache for table %s: %v", tableName, err)
+			}
 			h.sendResponse(w, map[string]interface{}{"deleted": deletedCount}, nil)
 			return
 
@@ -998,6 +1070,11 @@ func (h *Handler) handleDelete(ctx context.Context, w common.ResponseWriter, id
 
 	logger.Info("Successfully deleted record with ID: %s", id)
 	// Return the deleted record data
+	// Invalidate cache for this table
+	cacheTags := buildCacheTags(schema, tableName)
+	if err := invalidateCacheForTags(ctx, cacheTags); err != nil {
+		logger.Warn("Failed to invalidate cache for table %s: %v", tableName, err)
+	}
 	h.sendResponse(w, recordToDelete, nil)
 }
 

pkg/restheadspec/cache_helpers.go

@@ -1,4 +1,4 @@
-package cache
+package restheadspec
 
 import (
 	"context"
@@ -7,56 +7,42 @@ import (
 	"encoding/json"
 	"fmt"
 	"strings"
+	"time"
 
+	"github.com/bitechdev/ResolveSpec/pkg/cache"
 	"github.com/bitechdev/ResolveSpec/pkg/common"
 )
 
-// QueryCacheKey represents the components used to build a cache key for query total count
+// expandOptionKey represents expand options for cache key
-type QueryCacheKey struct {
+type expandOptionKey struct {
+	Relation string `json:"relation"`
+	Where    string `json:"where,omitempty"`
+}
+
+// queryCacheKey represents the components used to build a cache key for query total count
+type queryCacheKey struct {
 	TableName      string                `json:"table_name"`
 	Filters        []common.FilterOption `json:"filters"`
 	Sort           []common.SortOption   `json:"sort"`
 	CustomSQLWhere string                `json:"custom_sql_where,omitempty"`
 	CustomSQLOr    string                `json:"custom_sql_or,omitempty"`
-	Expand         []ExpandOptionKey     `json:"expand,omitempty"`
+	Expand         []expandOptionKey     `json:"expand,omitempty"`
 	Distinct       bool                  `json:"distinct,omitempty"`
 	CursorForward  string                `json:"cursor_forward,omitempty"`
 	CursorBackward string                `json:"cursor_backward,omitempty"`
 }
 
-// ExpandOptionKey represents expand options for cache key
+// cachedTotal represents a cached total count
-type ExpandOptionKey struct {
+type cachedTotal struct {
-	Relation string `json:"relation"`
+	Total int `json:"total"`
-	Where    string `json:"where,omitempty"`
 }
 
-// BuildQueryCacheKey builds a cache key from query parameters for total count caching
+// buildExtendedQueryCacheKey builds a cache key for extended query options (restheadspec)
-// This is used to cache the total count of records matching a query
-func BuildQueryCacheKey(tableName string, filters []common.FilterOption, sort []common.SortOption, customWhere, customOr string) string {
-	key := QueryCacheKey{
-		TableName:      tableName,
-		Filters:        filters,
-		Sort:           sort,
-		CustomSQLWhere: customWhere,
-		CustomSQLOr:    customOr,
-	}
-
-	// Serialize to JSON for consistent hashing
-	jsonData, err := json.Marshal(key)
-	if err != nil {
-		// Fallback to simple string concatenation if JSON fails
-		return hashString(fmt.Sprintf("%s_%v_%v_%s_%s", tableName, filters, sort, customWhere, customOr))
-	}
-
-	return hashString(string(jsonData))
-}
-
-// BuildExtendedQueryCacheKey builds a cache key for extended query options (restheadspec)
 // Includes expand, distinct, and cursor pagination options
-func BuildExtendedQueryCacheKey(tableName string, filters []common.FilterOption, sort []common.SortOption,
+func buildExtendedQueryCacheKey(tableName string, filters []common.FilterOption, sort []common.SortOption,
 	customWhere, customOr string, expandOpts []interface{}, distinct bool, cursorFwd, cursorBwd string) string {
 
-	key := QueryCacheKey{
+	key := queryCacheKey{
 		TableName:      tableName,
 		Filters:        filters,
 		Sort:           sort,
@@ -69,11 +55,11 @@ func BuildExtendedQueryCacheKey(tableName string, filters []common.FilterOption,
 
 	// Convert expand options to cache key format
 	if len(expandOpts) > 0 {
-		key.Expand = make([]ExpandOptionKey, 0, len(expandOpts))
+		key.Expand = make([]expandOptionKey, 0, len(expandOpts))
 		for _, exp := range expandOpts {
 			// Type assert to get the expand option fields we care about for caching
 			if expMap, ok := exp.(map[string]interface{}); ok {
-				expKey := ExpandOptionKey{}
+				expKey := expandOptionKey{}
 				if rel, ok := expMap["relation"].(string); ok {
 					expKey.Relation = rel
 				}
@@ -83,7 +69,6 @@ func BuildExtendedQueryCacheKey(tableName string, filters []common.FilterOption,
 				key.Expand = append(key.Expand, expKey)
 			}
 		}
-		// Sort expand options for consistent hashing (already sorted by relation name above)
 	}
 
 	// Serialize to JSON for consistent hashing
@@ -104,24 +89,38 @@ func hashString(s string) string {
 	return hex.EncodeToString(h.Sum(nil))
 }
 
-// GetQueryTotalCacheKey returns a formatted cache key for storing/retrieving total count
+// getQueryTotalCacheKey returns a formatted cache key for storing/retrieving total count
-func GetQueryTotalCacheKey(hash string) string {
+func getQueryTotalCacheKey(hash string) string {
 	return fmt.Sprintf("query_total:%s", hash)
 }
 
-// CachedTotal represents a cached total count
+// buildCacheTags creates cache tags from schema and table name
-type CachedTotal struct {
+func buildCacheTags(schema, tableName string) []string {
-	Total int `json:"total"`
+	return []string{
+		fmt.Sprintf("schema:%s", strings.ToLower(schema)),
+		fmt.Sprintf("table:%s", strings.ToLower(tableName)),
+	}
 }
 
-// InvalidateCacheForTable removes all cached totals for a specific table
+// setQueryTotalCache stores a query total in the cache with schema and table tags
-// This should be called when data in the table changes (insert/update/delete)
+func setQueryTotalCache(ctx context.Context, cacheKey string, total int, schema, tableName string, ttl time.Duration) error {
-func InvalidateCacheForTable(ctx context.Context, tableName string) error {
+	c := cache.GetDefaultCache()
-	cache := GetDefaultCache()
+	cacheData := cachedTotal{Total: total}
+	tags := buildCacheTags(schema, tableName)
 
-	// Build a pattern to match all query totals for this table
+	return c.SetWithTags(ctx, cacheKey, cacheData, ttl, tags)
-	// Note: This requires pattern matching support in the provider
+}
-	pattern := fmt.Sprintf("query_total:*%s*", strings.ToLower(tableName))
+
-
+// invalidateCacheForTags removes all cached items matching the specified tags
-	return cache.DeleteByPattern(ctx, pattern)
+func invalidateCacheForTags(ctx context.Context, tags []string) error {
+	c := cache.GetDefaultCache()
+
+	// Invalidate for each tag
+	for _, tag := range tags {
+		if err := c.DeleteByTag(ctx, tag); err != nil {
+			return err
+		}
+	}
+
+	return nil
 }

pkg/restheadspec/handler.go

@@ -529,7 +529,7 @@ func (h *Handler) handleRead(ctx context.Context, w common.ResponseWriter, id st
 	var total int
 	if !options.SkipCount {
 		// Try to get from cache first (unless SkipCache is true)
-		var cachedTotal *cache.CachedTotal
+		var cachedTotalData *cachedTotal
 		var cacheKey string
 
 		if !options.SkipCache {
@@ -543,7 +543,7 @@ func (h *Handler) handleRead(ctx context.Context, w common.ResponseWriter, id st
 				}
 			}
 
-			cacheKeyHash := cache.BuildExtendedQueryCacheKey(
+			cacheKeyHash := buildExtendedQueryCacheKey(
 				tableName,
 				options.Filters,
 				options.Sort,
@@ -554,22 +554,22 @@ func (h *Handler) handleRead(ctx context.Context, w common.ResponseWriter, id st
 				options.CursorForward,
 				options.CursorBackward,
 			)
-			cacheKey = cache.GetQueryTotalCacheKey(cacheKeyHash)
+			cacheKey = getQueryTotalCacheKey(cacheKeyHash)
 
 			// Try to retrieve from cache
-			cachedTotal = &cache.CachedTotal{}
+			cachedTotalData = &cachedTotal{}
-			err := cache.GetDefaultCache().Get(ctx, cacheKey, cachedTotal)
+			err := cache.GetDefaultCache().Get(ctx, cacheKey, cachedTotalData)
 			if err == nil {
-				total = cachedTotal.Total
+				total = cachedTotalData.Total
 				logger.Debug("Total records (from cache): %d", total)
 			} else {
 				logger.Debug("Cache miss for query total")
-				cachedTotal = nil
+				cachedTotalData = nil
 			}
 		}
 
 		// If not in cache or cache skip, execute count query
-		if cachedTotal == nil {
+		if cachedTotalData == nil {
 			count, err := query.Count(ctx)
 			if err != nil {
 				logger.Error("Error counting records: %v", err)
@@ -579,11 +579,10 @@ func (h *Handler) handleRead(ctx context.Context, w common.ResponseWriter, id st
 			total = count
 			logger.Debug("Total records (from query): %d", total)
 
-			// Store in cache (if caching is enabled)
+			// Store in cache with schema and table tags (if caching is enabled)
 			if !options.SkipCache && cacheKey != "" {
 				cacheTTL := time.Minute * 2 // Default 2 minutes TTL
-				cacheData := &cache.CachedTotal{Total: total}
+				if err := setQueryTotalCache(ctx, cacheKey, total, schema, tableName, cacheTTL); err != nil {
-				if err := cache.GetDefaultCache().Set(ctx, cacheKey, cacheData, cacheTTL); err != nil {
 					logger.Warn("Failed to cache query total: %v", err)
 					// Don't fail the request if caching fails
 				} else {
@@ -1149,6 +1148,11 @@ func (h *Handler) handleCreate(ctx context.Context, w common.ResponseWriter, dat
 	}
 
 	logger.Info("Successfully created %d record(s)", len(mergedResults))
+	// Invalidate cache for this table
+	cacheTags := buildCacheTags(schema, tableName)
+	if err := invalidateCacheForTags(ctx, cacheTags); err != nil {
+		logger.Warn("Failed to invalidate cache for table %s: %v", tableName, err)
+	}
 	h.sendResponseWithOptions(w, responseData, nil, &options)
 }
 
@@ -1320,6 +1324,11 @@ func (h *Handler) handleUpdate(ctx context.Context, w common.ResponseWriter, id
 	}
 
 	logger.Info("Successfully updated record with ID: %v", targetID)
+	// Invalidate cache for this table
+	cacheTags := buildCacheTags(schema, tableName)
+	if err := invalidateCacheForTags(ctx, cacheTags); err != nil {
+		logger.Warn("Failed to invalidate cache for table %s: %v", tableName, err)
+	}
 	h.sendResponseWithOptions(w, mergedData, nil, &options)
 }
 
@@ -1388,6 +1397,11 @@ func (h *Handler) handleDelete(ctx context.Context, w common.ResponseWriter, id
 				return
 			}
 			logger.Info("Successfully deleted %d records", deletedCount)
+			// Invalidate cache for this table
+			cacheTags := buildCacheTags(schema, tableName)
+			if err := invalidateCacheForTags(ctx, cacheTags); err != nil {
+				logger.Warn("Failed to invalidate cache for table %s: %v", tableName, err)
+			}
 			h.sendResponse(w, map[string]interface{}{"deleted": deletedCount}, nil)
 			return
 
@@ -1456,6 +1470,11 @@ func (h *Handler) handleDelete(ctx context.Context, w common.ResponseWriter, id
 				return
 			}
 			logger.Info("Successfully deleted %d records", deletedCount)
+			// Invalidate cache for this table
+			cacheTags := buildCacheTags(schema, tableName)
+			if err := invalidateCacheForTags(ctx, cacheTags); err != nil {
+				logger.Warn("Failed to invalidate cache for table %s: %v", tableName, err)
+			}
 			h.sendResponse(w, map[string]interface{}{"deleted": deletedCount}, nil)
 			return
 
@@ -1510,6 +1529,11 @@ func (h *Handler) handleDelete(ctx context.Context, w common.ResponseWriter, id
 				return
 			}
 			logger.Info("Successfully deleted %d records", deletedCount)
+			// Invalidate cache for this table
+			cacheTags := buildCacheTags(schema, tableName)
+			if err := invalidateCacheForTags(ctx, cacheTags); err != nil {
+				logger.Warn("Failed to invalidate cache for table %s: %v", tableName, err)
+			}
 			h.sendResponse(w, map[string]interface{}{"deleted": deletedCount}, nil)
 			return
 
@@ -1611,6 +1635,11 @@ func (h *Handler) handleDelete(ctx context.Context, w common.ResponseWriter, id
 	}
 
 	// Return the deleted record data
+	// Invalidate cache for this table
+	cacheTags := buildCacheTags(schema, tableName)
+	if err := invalidateCacheForTags(ctx, cacheTags); err != nil {
+		logger.Warn("Failed to invalidate cache for table %s: %v", tableName, err)
+	}
 	h.sendResponse(w, recordToDelete, nil)
 }