Caching Patterns

Couchbase works as a cache natively — every document can have a TTL, and the KV API is sub-millisecond. No separate Redis instance needed.

TTL / Expiry

Set expiry on any KV operation. The document is automatically deleted when it expires.

// Node.js — expiry in seconds
await collection.upsert('session::abc123', { userId: 'alice', cart: [] },
  { expiry: 3600 }  // 1 hour
);

// Insert with expiry (fails if key exists)
await collection.insert('rate::ip::1.2.3.4', { count: 0 },
  { expiry: 60 }  // 1 minute window
);