feat: implement connection management in DatabasePlugin; add connection check in RedisPlugin; update session ID in runQuery test

src/vm/plugins/redis.plugin.ts

@@ -2,6 +2,8 @@ import Redis from "ioredis";
 import { Plugin } from "../plugin.class";
 
 export class RedisPlugin extends Plugin {
+  private static connectionPool: Map<string, Redis> = new Map();
+
   constructor(
     name: string,
     private redisClient: Redis,
@@ -22,16 +24,37 @@ export class RedisPlugin extends Plugin {
     ]);
   }
 
+  private static isConnected(key: string): boolean {
+    return (
+      RedisPlugin.connectionPool.has(key) &&
+      RedisPlugin.connectionPool.get(key).status === "ready"
+    );
+  }
+
   static init(
     name: string,
     config: { host: string; port: number },
     prefix: string
   ): RedisPlugin {
+    const key = `${config.host}:${config.port}`;
+
+    if (RedisPlugin.isConnected(key)) {
+      return new RedisPlugin(name, RedisPlugin.connectionPool.get(key), prefix);
+    }
+
+    RedisPlugin.connectionPool.delete(key);
+
     const redisClient = new Redis({
       host: config.host,
       port: config.port,
+      commandTimeout: 10000,
+      connectTimeout: 10000,
+      lazyConnect: false,
+      maxRetriesPerRequest: 1,
+      enableReadyCheck: true,
     });
 
+    RedisPlugin.connectionPool.set(key, redisClient);
     return new RedisPlugin(name, redisClient, prefix);
   }