Redis Caching on VPS – Sessions, Queues & Performance

Quick answer: Redis on a VPS speeds apps as cache, session store and queue – bind locally, set requirepass, limit maxmemory.

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Frequently asked questions (FAQ)

When is Redis worth it?

Repeated DB queries, sessions, rate limits, job queues (Bull/Sidekiq). When latency or QPS hurts.

Bind Redis locally only?

Yes in production: bind 127.0.0.1 or internal Docker network. Never expose without auth + TLS.

AOF or RDB persistence?

Cache-only: RDB fine. Sessions/queues: AOF or hybrid. Trade-off: disk IO vs durability.

RAM planning?

Set maxmemory + allkeys-lru. Redis is in-memory – avoid oversizing.

Redis with PgBouncer?

Complementary: Redis caches hot keys; PgBouncer pools Postgres → PgBouncer guide.

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