Open
Description
node_redis: 2.7.1
redis: 3.2
platform: Amazon linux
description:
When redis' snapshotting occurs it disconnects the redis client. The client reconnects and resubscribes, however, they no longer receive data. This can be reproduced by issuing a SAVE command via the redis-cli.
JS
const redis = require('redis');
const redisClient = redis.createClient({
host: config.redisEndpoint,
port: config.redisPort,
});
redisClient.on('connect', () => {
console.log('Connected to Redis');
console.log('subscription_set:', redisClient.subscription_set);
});
redisClient.on('reconnecting', (stats) => {
console.log('Reconnecting to Redis', stats);
});
redisClient.on('error', (error) => {
console.log('Failed to connect to Redis: ', error);
});
redisClient.on('subscribe', (channel, count) => { // eslint-disable-line no-unused-vars
console.log('Subscribed to: ', channel, count);
});
redisClient.on('message', (channel, message) => { // eslint-disable-line no-unused-vars
console.log('Received from: ', channel, message);
});
redisClient.subscribe('test');
Logs
Initial connect
info: Connected to Redis
info: subscription_set:
info: Subscribed to: test 1
Issuing a SAVE command in redis-cli
info: Error: Redis connection to 34.213.3.19:6379 failed - read ECONNRESET
info: Reconnecting to Redis delay=983, attempt=4, code=ECONNRESET, errno=ECONNRESET, syscall=connect, address=127.0.0.1, port=6379, total_retry_time=1118, times_connected=1
info: Connected to Redis
info: subscription_set: subscribe_test=test
info: Subscribed to: test 1
It is at this point that the client will no longer receive any data published to the channel test. If you have any questions or need more info to reproduce please let me know.