The blog
Hands-on articles about DevOps, Kubernetes, performance, WordPress and the tools I use as a Solution Engineer.
Find the right bin and install it
What’s docker-compose ? Docker Compose is a tool that simplifies the management of multi-container Docker applications. It allows users to defin…
Read articleGet a DNS zone manager
Default DNS Management Simplified When you buy a domain from places like Google Domains, handling your DNS records is done right there. It’s eas…
Read articleSpin up a varnish server for testing
Create the docker container docker run --name varnish -p 3456:80 varnish This command runs a Docker container named “varnish” using the &#…
Read articleVarnish Configuration Language ( VCL )
VCL_hash From this diagram we can see vcl_hash runs after receive and there is no way to avoid it. Indeed, just after hash the hash table look up take…
Read articleVarnish Configuration Language ( VCL )
Varnish state machine flow When a request comes into Fastly, it’s assigned out from a load balancer to one of the nodes on the POP, and that wil…
Read articlehow to get started with custom VCL
Get started with custom setting and VCL with Fastly When a request goes to Faslty it goes to the POP and then gets send to one of the node. The node h…
Read articleMethods of modifications
VCL states : This article zooms into the steps of dealing with requests using Varnish, shown in a diagram. We’ll mainly look at three important…
Read articleoffload your origin with an extra layer !
Without shielding To understand shielding, let’s look at this diagram. My main server is in Roubaix, France. My aim is to lighten the load on th…
Read articlenodes, pops, hash keys and benefits
The clustering nodes In a Point of Presence (PoP), there are several nodes that work independently. Each node has its own hash table to keep track of…
Read articleconcepts & benefit
What’s request collapsing ? Concept of request collapsing in the context of a cache system refers to the scenario where multiple identical reque…
Read articlerefresh objects in the cache with Fastly
Why purging ? If you want to make sure everyone sees the latest version of something on a website, like a new headline, you might need to “purge…
Read articleHIT / PASS / MISS and behaviours
What’s caching ? In a web application, caching works like a high-speed memory that stores frequently accessed data or content. When a user reque…
Read articleBlazing fast app logic all around the world
In a typical project, your web app is typically served from a single location, often the one you selected during project registration with your cloud…
Read articleSave time with a simple bash script
You can find the Bash script below if you want to speed up the process. #!/bin/bash # Check if the script is run as root if [ "$EUID" -ne 0 ]; then ec…
Read articlesave time by leveraging AI
Within the Operations Hub, there exists a powerful feature known as Custom Coded Actions, which are essentially server-side functions executable withi…
Read article
