RedisService.groovy

    // deletes all keys matching a pattern (see redis "keys" documentation for more)
    // OK for low traffic methods, but expensive compared to other redis commands
    // perf test before relying on this rather than storing your own set of keys to 
    // delete
    void deleteKeysWithPattern(keyPattern) {
        if (log.infoEnabled) log.info("Cleaning all redis keys with pattern  [${keyPattern}]")
        withRedis { Jedis redis ->
            String[] keys = redis.keys(keyPattern)
            if(keys) redis.del(keys)
        }
    }