There's been a lot of discussion recently about running Ruby with jemalloc. Sounds like some good memory savings to be had basically for free....

A Ruby hash is typically accessed using square brackets, like hash[key], but you can also use the method fetch, like hash.fetch(key)....

Welcome to 2018, where some of the most exciting innovations are happening in the compiler space....

Rails' cache stores can store the data in memory, Memcached, Redis, or even straight to disk. But which of the different cache stores is best for which.

Blocks of code in blog posts and articles often contain errors.I see it frequently, in other people’s writing and my own.Code examples are usually not.