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The Complete Guide to Optimising Web Images

Optimising images for your website can be a bit of a black art, but it’s well worth doing as the bandwidth savings can be large. It will also make a big difference to the speed at which your site loads.
Dan Barber
August 10, 2016
- Web
- Design
- Images
Tab completion in GNU Readline

Learn how to use GNU Readline’s powerful tab completion features in your own applications.
George Brocklehurst
August 8, 2016
- gitsh
- Readline
- C
Announcing Domain Name Sanity

Learn to make domains and TLS certificates predictable and debuggable, while grasping their core concepts with plenty of examples.
Edward Loveall
August 5, 2016
- News
- DNS
- Books
Building and testing a Phoenix JSON API

Learn how to build a blazing fast Phoenix API. Updated for Phoenix 1.2.
Paul Smith
August 2, 2016
- Elixir
- Testing
- Phoenix
HyperLogLogs in Redis

Learn what a HyperLogLog is and how you can use it to count billions of unique things.
Calle Erlandsson
August 1, 2016
- Redis
- Web
- Ruby
Advanced Postgres Performance Tips

What do you do when indexes aren’t enough?
Caleb Hearth
July 29, 2016
- PostgreSQL
- Databases
- SQL
- Performance
Literate Vim

Vim commands are terse and arcane, but very expressive. See a complex command broken down by clause.
Caleb Hearth
July 28, 2016
- Vim
Reading a Postgres EXPLAIN ANALYZE Query Plan

Take a guided tour through a query plan for a “simple” SQL query.
Caleb Hearth
July 26, 2016
- PostgreSQL
- Databases
- SQL
- Performance
Fundamentals of Test-Driven Development, Now on Upcase

Learn how to use Test-Driven Development to write better software in our newest Upcase trail.
Chris Toomey and Geoff Harcourt
July 19, 2016
- News
- Testing
- Ruby
- Upcase
Make Phoenix Even Faster with a GenServer-backed Key Value Store

Skip adding another dependency and leverage GenServer and Erlang Term Storage to build an in-memory key-value store for even faster Phoenix applications.
Josh Clayton
July 13, 2016
- Web
- Elixir
- Phoenix
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