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AppSignal

Security Best Practices for Node.js

Because a lot of systems are connected to the web these days (or, at least, communicate/integrate with it at some level), companies are giving more and more attention to web security. Web security usually comes to public attention when certain events reach the news, for example, security leakages, hacker activities, and/or data-stealing over big companies, some of them really large (like Google, LinkedIn, etc.).

AppSignal Ruby Gem 2.11: Active Job and Friends

We just released Ruby Gem 2.11. We are always making things easier to use for you, so more things work out of the box and more instrumentation and dashboarding is built without you doing any heavy lifting. This release has a big overhaul of Active Job support. The cherry on the stroopwafel cake is the automatically generated dashboard with status per queue, queue throughput and queue times. 2.11 also polishes a lot of other integrations. Let’s dive in.

AppSignal Now Supports Redis for Node.js Out of the Box

Starting today with version 0.6.0 of the Node.js integration, instrumenting a Node.js app that uses Redis is much easier. In fact, we instrument it for you - meaning that if you use Redis in your own app, there’s no extra work for you, everything Just Works™ out of the box! 🎉

The State of Elixir HTTP Clients

In today’s post, we’ll look at two Elixir HTTP client libraries: Mint and Finch. Finch is built on top of Mint. We’ll see the benefits offered by this abstraction layer. We’ll also talk about some of the existing HTTP client libraries in the ecosystem and discuss some of the things that make Mint and Finch different. Finally, we’ll put together a quick project that makes use of Finch to put all of our learning into action. Let’s jump right in!

Node.js Resiliency Concepts: The Circuit Breaker

In 2009 Node.js opened up a door for front-end developers to dip their toes into the world of servers without having to leave the comfort of their language. It’s almost effortless to get started with Node. You can basically copy-paste an entire HTTP server into existence and then install an ODM and you’ve got your CRUD app ready to roll! However, if we’ve learned anything from the amazing Spider-Man, it’s that with great power, comes great responsibility.

Scaling Queue Workers Efficiently with AppSignal Metrics

Most web apps can benefit from a background queue, often used to process error-prone or time-consuming side jobs. These background jobs can vary from sending emails, to updating caches, to performing core business logic. As any background queueing system scales the number of jobs it needs to process, the pool of workers processing those jobs needs to scale as well.

How AppSignal Monitors Their Own Kafka Brokers

Today, we dip our toes into collecting custom metrics with a standalone agent. We’ll be taking our own Kafka brokers and using the StatsD protocol to get the metrics into AppSignal. This post is for those with some experience in using monitoring tools, and who want to take monitoring to every corner of their architecture, or want to add their own metrics to their monitoring setup.

A Deep Dive Into V8

A majority of front-end developers deal with this buzzword all the time: V8. A big part of its popularity is due to the fact that it led JavaScript to a new level of performance. Yes, V8 is very fast. But, how does it perform its magic and why is it so responsive? The official docs state that “V8 is Google’s open source high-performance JavaScript and WebAssembly engine, written in C++. It is used in Chrome and Node.js, among others”.

New Feature: Add Custom Metrics For Node.js in AppSignal

You can now monitor any metrics you’d like in your Node.js app with AppSignal. With custom metrics and minutely probes by your side, you’ll now have an excellent overview of your app. If you’ve ever thought “I wish we measured this specific thing so I could monitor better what is going on…”, then this feature is perfect for you.