feat: 全面优化系统 - 修复task1语法错误 + Bot超时保护 + 熔断重试 + Redis缓存 + SEO + 日志清理 + 内容质量评估

scripts/lib/redis-cache.mjs

@@ -0,0 +1,67 @@
+import Redis from "ioredis";
+
+let _redis = null;
+
+function getRedis() {
+  if (!_redis) {
+    _redis = new Redis({
+      host: process.env.REDIS_HOST || "127.0.0.1",
+      port: parseInt(process.env.REDIS_PORT || "6379"),
+      password: process.env.REDIS_PASSWORD || undefined,
+      db: parseInt(process.env.REDIS_DB || "1"),
+      lazyConnect: true,
+      maxRetriesPerRequest: 2,
+      retryStrategy: (times) => Math.min(times * 200, 3000),
+    });
+    _redis.on("error", (err) => {
+      console.warn(`[redis-cache] Connection error: ${err.message}`);
+    });
+  }
+  return _redis;
+}
+
+async function cacheGet(key) {
+  try {
+    const redis = getRedis();
+    if (redis.status !== "ready") {
+      await redis.connect().catch(() => {});
+    }
+    if (redis.status !== "ready") return null;
+    const data = await redis.get(key);
+    return data ? JSON.parse(data) : null;
+  } catch {
+    return null;
+  }
+}
+
+async function cacheSet(key, value, ttlSeconds = 3600) {
+  try {
+    const redis = getRedis();
+    if (redis.status !== "ready") {
+      await redis.connect().catch(() => {});
+    }
+    if (redis.status !== "ready") return;
+    await redis.set(key, JSON.stringify(value), "EX", ttlSeconds);
+  } catch {
+    // 静默失败，不影响主流程
+  }
+}
+
+async function cacheDel(key) {
+  try {
+    const redis = getRedis();
+    if (redis.status !== "ready") return;
+    await redis.del(key);
+  } catch {
+    // 静默失败
+  }
+}
+
+async function disconnectRedis() {
+  if (_redis) {
+    await _redis.quit().catch(() => {});
+    _redis = null;
+  }
+}
+
+export { getRedis, cacheGet, cacheSet, cacheDel, disconnectRedis };