fixes for redis event memory leak

libs/cache/src/index.ts

@@ -2,6 +2,9 @@ import { RedisCache } from './redis-cache';
 import { RedisConnectionManager } from './connection-manager';
 import type { CacheProvider, CacheOptions } from './types';
 
+// Cache instances registry to prevent multiple instances with same prefix
+const cacheInstances = new Map<string, CacheProvider>();
+
 /**
  * Create a Redis cache instance with trading-optimized defaults
  */
@@ -14,6 +17,20 @@ export function createCache(options: Partial<CacheOptions> = {}): CacheProvider
     ...options
   };
 
+  // For shared connections, reuse cache instances with the same key prefix
+  if (defaultOptions.shared) {
+    const cacheKey = `${defaultOptions.keyPrefix}-${defaultOptions.ttl}`;
+    
+    if (cacheInstances.has(cacheKey)) {
+      return cacheInstances.get(cacheKey)!;
+    }
+    
+    const cache = new RedisCache(defaultOptions);
+    cacheInstances.set(cacheKey, cache);
+    return cache;
+  }
+
+  // For non-shared connections, always create new instances
   return new RedisCache(defaultOptions);
 }
 
@@ -21,45 +38,39 @@ export function createCache(options: Partial<CacheOptions> = {}): CacheProvider
  * Create a cache instance for trading data
  */
 export function createTradingCache(options: Partial<CacheOptions> = {}): CacheProvider {
-  const defaultOptions: CacheOptions = {
+  return createCache({
     keyPrefix: 'trading:',
     ttl: 3600, // 1 hour default
     enableMetrics: true,
     shared: true,
     ...options
-  };
+  });
-
-  return new RedisCache(defaultOptions);
 }
 
 /**
  * Create a cache for market data with shorter TTL
  */
 export function createMarketDataCache(options: Partial<CacheOptions> = {}): CacheProvider {
-  const defaultOptions: CacheOptions = {
+  return createCache({
     keyPrefix: 'market:',
     ttl: 300, // 5 minutes for market data
     enableMetrics: true,
     shared: true,
     ...options
-  };
+  });
-
-  return new RedisCache(defaultOptions);
 }
 
 /**
  * Create a cache for indicators with longer TTL
  */
 export function createIndicatorCache(options: Partial<CacheOptions> = {}): CacheProvider {
-  const defaultOptions: CacheOptions = {
+  return createCache({
     keyPrefix: 'indicators:',
     ttl: 1800, // 30 minutes for indicators
     enableMetrics: true,
     shared: true,
     ...options
-  };
+  });
-
-  return new RedisCache(defaultOptions);
 }
 
 // Export types and classes

libs/cache/src/redis-cache.ts

@@ -42,7 +42,13 @@ export class RedisCache implements CacheProvider {
       singleton: options.shared ?? true, // Default to shared connection for cache
     });
 
+    // Only setup event handlers for non-shared connections to avoid memory leaks
+    if (!(options.shared ?? true)) {
       this.setupEventHandlers();
+    } else {
+      // For shared connections, just monitor the connection status without adding handlers
+      this.isConnected = this.redis.status === 'ready';
+    }
   }
 
   private setupEventHandlers(): void {
@@ -235,6 +241,14 @@ export class RedisCache implements CacheProvider {
   }
 
   isReady(): boolean {
-    return this.redis.status === 'ready';
+    // Always check the actual Redis connection status
+    const ready = this.redis.status === 'ready';
+    
+    // Update local flag if we're not using shared connection
+    if (this.isConnected !== ready) {
+      this.isConnected = ready;
+    }
+    
+    return ready;
   }
 }