Function redisCache

redisCache(client: RedisClient): Cache & { close(): Promise<void> }
Adapts an already-connected ioredis client into the Cache the core expects. Values are opaque strings; this adapter never parses them. The caller creates and owns the client (TLS, sentinel, cluster), which also lets a test substitute a fake; the returned close() releases the connection.

ttlMs maps to Redis's PX flag, so expiry is enforced by Redis itself; a set with no TTL persists until invalidated. Keys live under the economy:cache: prefix, so they never collide with other data in the instance and an operator can find or delete them as a set. A failed call throws a retryable STORE.FAILURE; the cache is best-effort, so callers fall back to the store.
Parameters
- client: RedisClient
Returns Cache & { close(): Promise<void> }
Example
```
import Redis from 'ioredis';
const cache = redisCache(new Redis('redis://localhost:6379'));
await cache.set('bal:usr_42:spendable', 'CREDIT:12.34', 60_000);
await cache.get('bal:usr_42:spendable'); // 'CREDIT:12.34' | null past the TTL
await cache.close();
```
See
Storage for how the cache port backs hot reads.
- Defined in src/adapters/redis.ts:63