zedeus / redpool

Redis connection pool for Nim

redpool

Simple Redis connection pool.

The timeout argument allows connections to be reused after a given time, in case they don't get released properly. The maxConn argument sets a soft limit, which destroys connection objects when released if the limit has been reached. The withAcquire template can be used to automatically acquire and release a connection, but note that with Nim versions below 1.3.1, the acquire call is waitFor'd since async wasn't allowed inside templates and macros before that.

Usage

import asyncdispatch, redis, redpool

proc main {.async.} =
  let pool = await newRedisPool(5, timeout=4, maxConns=7)

  # manual acquire
  let conn = await pool.acquire()
  echo await conn.ping()
  await pool.release(conn)

  # acquire template
  pool.withAcquire(conn2):
    echo await conn2.ping()

redpool's Issues

Add support for Unix sockets

Currently it seems that newRedisPool cannot connect to a Redis server using an Unix socket.

This is problematic for machines with multiple Redis instances (e.g. one Redis instance per application) that only exposes Unix sockets. It forces the user to manually choose a localhost port to bind.

Unix sockets support would also bring user/group permissions.

This would be useful to make NixOS Nitter service more secure.

Best regards,