There is a Redis foreign data wrapper (https://github.com/pg-redis-fdw/redis_fdw https://github.com/pg-redis-fdw/redis_fdw) so you can access Redis from Postgre

There is a Redis foreign data wrapper (https://github.com/pg-redis-fdw/redis_fdw https://github.com/pg-redis-fdw/redis_fdw) so you can access Redis from PostgreSQL. The new 9.3 adds writable FDW so you could even write to Redis from Postgres when the adapter supports it. Redis is a good complement to Postgres. It provides caching and fast, non-persistent data store, while Postgres is the durable database.