node-redis | Redis Node.js client | Runtime Evironment library
kandi X-RAY | node-redis Summary
kandi X-RAY | node-redis Summary
node-redis is a modern, high performance Redis client for Node.js with built-in support for Redis 6.2 commands and modules including RediSearch and RedisJSON.
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of node-redis
node-redis Key Features
node-redis Examples and Code Snippets
Lines of Code : 270
License : No License
Copy微信的access_token是从获取开始7200秒后失效,也就是2个小时,需要重新获取.
access_token必须能在路由中全局访问到,本系列博文在express框架中测试,
所以可以挂载到请求的对象(req)上;
获取一次可以使用2小时,2小时后需要重新获取,这里采用Redis数据库存储access_token,
为什么使用redis数据库呢疑问,因为redis数据库也带过期特性,感觉天生就和access_token
的过期匹配,结合起来使用非常方便.开始改造.
reques /*
* @HADC
* blockWindowSize polling interval id
* pub/sub channel name of Redis
*/
var blockWindowSizePollingIntervalId;
var redisChannels = ["applyEPOW", "releaseEPOW"];
var emitLog = function(text) { _this.e const {PubgAPI, PubgAPIErrors, REGION, SEASON, MATCH} = require('pubg-api-redis');
// If no Redis configuration it wont be cached
const api = new PubgAPI({
apikey: 'XXXXX',
redisConfig: {
host: '127.0.0.1',
port: 6379,
expiration: 30 // This example demonstrates how to use RediSearch and RedisJSON together.
// Requires both the RediSearch and RedisJSON modules:
// https://redis.io/docs/stack/search/
// https://redis.io/docs/stack/json/
import { createClient, SchemaFieldTypes, Ag // This example demonstrates the use of the Top K
// in the RedisBloom module (https://redis.io/docs/stack/bloom/)
import { createClient } from 'redis';
const client = createClient();
await client.connect();
// Delete any pre-existing Top K.
awa // Add data to a Redis TimeSeries and query it.
// Requires the RedisTimeSeries module: https://redis.io/docs/stack/timeseries/
import { createClient } from 'redis';
import { TimeSeriesDuplicatePolicies, TimeSeriesEncoding, TimeSeriesAggregationType version: '3.8'
services:
app:
build: .
ports: ['8000:8000']
environment:
REDIS_HOST: redis
PGHOST: db
worker:
build: .
command: celery worker -A queue -l info
environment:
REDIS_HOST: redis
const Redis = require("ioredis");
const redis = new Redis(6379, 'fredflenstone.lhpxwy.az.0002.use2.cache.amazonaws.com');
exports.handler = async(event)=>{
let key=event.key;
let response;
let resultValue;
let errorValue;
import { dev } from '$app/env'
import redis from 'redis'
const client = redis.createClient()
const get = promisify(client.get).bind(client)
export const getKvValue = async (key: string): Promise => {
return dev ? await get(key) : client.set('foo', 'bar', (err, reply) => {
if (err) throw err;
console.log(reply);
client.get('foo', (err, reply) => {
if (err) throw err;
console.log(reply);
});
});
const rCommunity Discussions
Trending Discussions on node-redis
QUESTION
const express = require("express");
const redis = require("redis");
const app = express();
const client = redis.createClient({
url: "redis://admin123@ec2-35-182-15-126.ca-central-1.compute.amazonaws.com",
});
client.on("connect", function () {
console.log("redis connected");
console.log(`connected ${redisClient.connected}`);
});
client.on("error", (err) => {
console.log(err);
});
app.listen(process.env.PORT || 3000, () => {
console.log("Node server started");
});
ANSWER
Answered 2021-Nov-28 at 17:30Please check your ec2 redis connection
QUESTION
I just got started with svelte and was trying to make an app with redis as the db. I made a typescript file with all the db functions I would need and tried to import it into my svelte components, but when I did that I got the following error
...ANSWER
Answered 2022-Jan-04 at 20:45Normally, because the redis - npm package is designed for Node.js, I would say to follow How to use npm modules in browser? and use browserify so that it's able to run in the browser.
After reading Can I connect directly to a Redis server from JavaScript running in a browser?, I would say that you need a server-side setup to connect to your redis server and then you can query your server-side as you need.
QUESTION
I have NodeJS application running with Socket.io for real-time updates. I am using PM2 process manager for production Node.js application. Now I want to use cluster mode in PM2. As nodejs applications runs in single process, I want to utilize max cpu available in on my server system. Currently I have 4 cores in my system. So with PM2 cluster mode, i can utilize all cores and PM2 will handle everything on its own behind the scene.
When using single server instance, My nodejs app with socket.io working fine with client. But when i am using cluster mode, PM2 launches 4 server instances. I tried to connect multiple client (through opening serveral terminals and running client side part on them) and they are connecting successfully with instances launched by PM2 in random manner which is expected and fine.
What i want to do?
- Initiate the pm2 with cluster mode
- clients can connect with any of the launched instance by pm2
- after client connects, Server-1 will emit the events which should be sent to all the clients connected to all server
- After successfully testing above steps, i will integrate the logic of room, but as i am not getting success in step 3, I am not going for setp 4.
My problem is, when i want to emit event from server-1 to clients, it should be sent to all clients connected to all 4 server instance (server-1, server-2, server-3, server-4 instances launched by PM2).
But whenever i am emiting event from server-1, it only gets sent to clients connected to server-1 only.
and i get error in server logs,
...ANSWER
Answered 2022-Jan-16 at 20:41I think that's because the redis@4 clients must be manually connected first:
QUESTION
I'm a TS noob but been writing some small services using TS. I'm working on a CLI tool build on top of node-redis. Great redis client.
What is the type of client in the following snippet?
ANSWER
Answered 2022-Jan-15 at 07:19You can use the type utility ReturnType to derive the type you need, like this:
QUESTION
I have a JSON with nested array like below to be saved in Redis. I am using RedisJSON module to save the data as JSON.
...ANSWER
Answered 2022-Jan-11 at 04:00Given the following JSON document
QUESTION
Basically this other post Express-session does not set cookie? where I'm following Ben Awad's Fullstack Tutorial. The cookie gets created but the server crashes and this is the error
...ANSWER
Answered 2021-Dec-15 at 23:33I've had the same error. In my situation I was able to fix it by changing the redis client to ioredis(I was using redis).
QUESTION
I am trying to use redis to store sessions with express-session. Here is the code:
...ANSWER
Answered 2021-Dec-01 at 14:57This is currently a known issue. Currently connect-redis is not compatible with the latest version of node redis. https://github.com/tj/connect-redis/issues/336
Add the following to your client to fix this issue until patched:
QUESTION
I am unable to set and get key in redis using node-redis. But set and get works well when using redis-cli. This is my code:
...ANSWER
Answered 2021-Apr-21 at 12:48Thanks all for suggestion. I posted the question as issue on the repo https://github.com/NodeRedis/node-redis/issues/1599 and got the answer from leibale:
QUESTION
I am using node-redis. I have a cron job that updates my db and I have redis cache that caches the db response.
The problem I'm having is that my cron job runs everyday at 12am, however I can only set redis cache to expire in x seconds from now. Is there a way to make node-redis cache expire everyday at 12am exactly. Thanks.
Code:
...ANSWER
Answered 2021-Apr-10 at 21:04yes, you can use https://redis.io/commands/expireat command, if you use https://www.npmjs.com/package/redis package as redis driver, code will be like this
QUESTION
I am using Node Redis with this config:
...ANSWER
Answered 2021-Mar-31 at 20:26Setting enable_offline_queue to false did the trick. Found lots of similar questions but none mentioned this:
Nodejs set timeout for Redis requests
What's the default timeout of ioredis send command for any redis call
How to set read timeout on node redis client?
Finally got this solution from here: https://github.com/NodeRedis/node-redis/issues/789#issuecomment-373270272
Do keep in mind that, with enable_offline_queue set to false, the commands that you issue while there's some connection issue with the server will never be executed.
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