So You Want to Hire an Intern?

Gowalla Developers on hiring an intern, debunking some myths about internship. Interns take a lot of time and energy, but they can be incredibly rewarding to you and your company. If you want to hire one, make sure they have a dedicated mentor, someone who can and should regularly ask: “Do you have enough to …

Storing hundreds of millions of simple key-value pairs in Redis

At Instagram, they’re using Redis (comparable to Memcached, but with more options) to map photoIds to userIds. After tweaking their setup — by using Redis hashes (dictionaries that are can be encoded in memory very efficiently) — in Redis, they’ve brought memory usage down from 70MB to 16MB to store 1,000,000 records. While prototyping this …

HTML5’s time element just got zapped

It’s with great sadness that I inform you that the HTML5 <time> element has been dropped, and replaced by a more generic – and thus less useful – <data> element. The pubdate attribute has been dropped completely, so there is now no simple way to indicate the publication date of a work. Goodbye HTML5 <time>, …

CSS4, what can we expect?

The CSS4 Selectors spec has already seen a large number of revisions since level 3. As it is still the first draft of the spec, it will likely change in numerous ways before it becomes a recommendation itself and there are browser implementations. Lets have a quick dig into the draft and see what has …