Today we deployed a new service, behind an AWS application load balancer (ALB). There is an Nginx on every target host, to dispatch requests to each worker process inside the host.

Here is how to configure Nginx to get the real client IP behind AWS ALB.

In the AWS cloudfront origin policy, there is a cookies whitelist.

We have a machine for development, running more than 100 NodeJS containers, all connected to a same docker network, interconnected by container names.

Recently, we encountered a strange problem: when the containers communicate with one another, they might sometimes report errors like getaddrinfo EAI_AGAIN, which means DNS query failed.

@litert/redis is a Redis client library developed entirely in TypeScript, for NodeJS.

All asynchronous operations are based on Promise, and it supports transactions and messaging.

Features

• Support read/write separation.
• Support pipeline.
• Support multi and exec.
• Support subscribe and publish.

Installation

1npm install @litert/redis@^3.0.3

v3.0.3 CHANGES

Versions before v3.0.3 are marked as deprecated. Please upgrade to the latest version ASAP.

• build(deps-dev): bump braces from 3.0.2 to 3.0.3 by @dependabot in https://github.com/litert/redis.js/pull/10
• fix(command): return keys in HMGET command correctly by @fenying in https://github.com/litert/redis.js/pull/11
• fix(protocol): decode “*-1” correctly by @fenying in https://github.com/litert/redis.js/pull/12
• Feat blmove command by @yunbookf in https://github.com/litert/redis.js/pull/13

Contributors

• @yunbookf #13

@litert/televoke is a RPC library for NodeJS, written in TypeScript.

Installation

1npm install @litert/televoke@^1.1.0

v1.1.0 CHANGELOG

• feat(protocol): added experimental supports for transports between worker thread.

  You can run Televoke servers in main thread or worker threads now.

• feat(protocol): added feature flag properties for channel objects.

  Now you can detect whether the server supports push messages and binary stream transport.

• fix(protocol): simplified the ITransporter.end method.

• fix(decoder): should decode protocol error as special error.

• fix(protocol): put protocol-error code in server_internal_server data.