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.
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()