Observability
Case study: this site's minimal RUM, cookie-free, exposed to Prometheus
How this site measures its Core Web Vitals with about forty lines of JavaScript, an anonymous beacon, Redis histograms and a /metrics endpoint for Prometh…
Guides & insights
A library for curious minds
Proxy & networking
Mastering ACLs in HAProxy: the complete guide
A complete guide to HAProxy ACLs: learn how to configure smart routing, IP-based access control, geolocation, and header and User-Agent analysis to secure…
Proxy & networking
Session persistence (stickiness)
Understanding how to ensure a user stays on the same backend server for the whole session.
Proxy & networking
Mastering ACLs in HAProxy
A complete guide to HAProxy ACLs: learn how to configure smart routing, IP-based access control, geolocation, and header and User-Agent analysis to secure…
Learning never stops