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