feat: enhance API and query handling with Redis caching; add QueryGuard for query validation; refactor services to utilize RedisClient for improved performance

src/redis/redis.service.ts

@@ -12,7 +12,7 @@ export class RedisClient {
 
   async set(
     key: string,
-    value: string,
+    value: any,
     expireInSeconds?: number
   ): Promise<"OK" | null> {
     if (!this.redis) {
@@ -20,18 +20,23 @@ export class RedisClient {
     }
 
     if (expireInSeconds) {
-      return await this.redis.set(key, value, "EX", expireInSeconds);
+      return await this.redis.set(
+        key,
+        JSON.stringify(value),
+        "EX",
+        expireInSeconds
+      );
     }
 
-    return await this.redis.set(key, value);
+    return await this.redis.set(key, JSON.stringify(value));
   }
 
-  async get(key: string): Promise<string | null> {
+  async get(key: string): Promise<any | null> {
     if (!this.redis) {
       return null;
     }
 
-    return await this.redis.get(key);
+    return JSON.parse(await this.redis.get(key));
   }
 
   async del(key: string): Promise<number | null> {