added redis configuration

src/config/redis.js

@@ -0,0 +1,58 @@
+const { createClient } = require('redis');
+const { redisUrl } = require('./config');
+const { logger } = require('../util/logger');
+
+const client = createClient({
+  url: redisUrl,
+  socket: {
+    reconnectStrategy: (retries) => {
+      const delay = Math.min(retries * 100, 5000);
+      logger.info(`Redis reconnecting attempt ${retries}, delay ${delay}ms`);
+      return delay;
+    },
+  },
+});
+
+client.on('connect', () => logger.info('Connected to redis'));
+client.on('error', () => logger.error(err, 'Redis error'));
+client.on('ready', () => logger.info('Redis client ready'));
+client.on('end', () => logger.info('Redis connection closed'));
+
+client
+  .connect()
+  .catch((err) => logger.error(err, 'Failed to connect to Redis'));
+
+// Helper functions
+async function setJson(key, value, ttl = null) {
+  try {
+    const jsonValue = JSON.stringify(value);
+    if (ttl) {
+      return await client.set(key, jsonValue, { EX: ttl });
+    }
+    return await client.set(key, jsonValue);
+  } catch (err) {
+    logger.error(err, 'Redis setJson error');
+    throw err;
+  }
+}
+
+async function getJson(key) {
+  try {
+    const value = await client.get(key);
+    return value ? JSON.parse(value) : null;
+  } catch (err) {
+    logger.error(err, 'Redis getJson error');
+    throw err;
+  }
+}
+
+process.on('SIGTERM', async () => {
+  logger.info('SIGTERM received - closing Redis connection');
+  await client.quit();
+});
+
+module.exports = {
+  client,
+  getJson,
+  setJson,
+};