MySQLTuner : MySQLTuner is a script written in Perl that will assist you with your MySQL configuration and make recommendations for increased performance and stabi...
Use The Index, Luke! : A tutorial covering SQL indexing and SQL tuning for developers: avoiding unnecessary details about database internals.
SQL indexing is the most effect...
cAdvisor : cAdvisor (Container Advisor) provides container users an understanding of the resource usage and performance characteristics of their running containe...
SPOF-O-Matic : Chrome extension for detecting and simulating frontend Single Points Of Failure. Detects likely third-party single points of failure as you browse and...
Query Mongo : Convert MySQL Queries to MongoDB Syntax
Vitess is a database clustering system for horizontal scaling of MySQL.
Let's make the web faster : There are many ways to make websites run faster. In this section, you can discover performance best practices that real web professionals employ in th...
Minimize round-trip times : An article on the best practices to apply in order to minimize HTTP round-trip times
WebPagetest : Run a free website speed test from multiple locations around the globe using real browsers (IE and Chrome) and at real consumer connection speeds.
Roll : Roll is a pico framework with performances and aesthetic in mind.
Flok : Web-based P2P collaborative editor for live coding music and graphics
Nice write-up on techniques for scaling up a web application.