In-depth technical articles, high-load system architecture analyses, and practical digital transformation strategies shared directly by Sudo’s engineers and solutions architects.
A fastcgi_cache configuration that works well on a pure content site is very easy to copy to another site. On an e-commerce site with a shopping cart, that same configuration can create two vulnerabil...
A customer support RAG chatbot that runs on a personal laptop takes one afternoon. The hard part is turning it into something you can hand to customers: it has to know when to stay silent, never inven...
A very common misconfiguration on minions that run many sites: the config file declares fastcgi_cache_key and fastcgi_cache_valid, but has no fastcgi_cache_path and no fastcgi_cache directive. Page ca...
A Kubernetes cluster running hundreds of websites tends to end up in the same state after a while: on paper the cluster is nearly full, the scheduler sees most of the RAM as reserved, some nodes are c...
Most websites on the Cloud VPS model use Let's Encrypt certificates that are issued and renewed automatically. But some customers still need commercial SSL: a business that wants the certificate to sh...
Moving the sites on a minion from the shared www PHP-FPM pool to one pool per site is the right step to end max_children errors. The reasons and the method are in One PHP-FPM pool per website: ending...
Every team has one: a seventy-line method buried in nested if statements that nobody dares to touch because it calculates real money. When the boss asks for "a new coupon for new customers", a develop...
An e-commerce website suddenly returns 502 instantly to every visitor, while the error.log on the balancer records dozens of no live upstreams lines per second. The notable detail: this site's upstrea...
When many Laravel sites on the same minion share a single PHP-FPM pool named www, the setup is very simple but has a fatal weakness: one slow site can grab every worker, and all the other sites on the...
A good data pipeline is not one long script that happens to run once. It is a chain of small steps, each with its own input, output and check, that gives the same result no matter how many times you r...
On a minion running several Laravel Octane websites, every site returns 502 Bad Gateway for almost a minute and then comes back on its own. Only one site actually ran out of memory; the others showed...
A request from a browser to a website can pass through several hops: a CDN such as Cloudflare, a balancer, and only then the minion that runs the application. Each hop is a proxy, and each proxy repla...
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