Parallel processing has long been a weak point when it comes to writing PHP applications, though this might not seem to be a problem as web servers are generally parallel in nature and the throughput will stay fairly constant regardless of whether you're programming for parallel or serial (unless you're limited primarily by the number of connections). In reality, Google has shown that latency matters and it’s in our best interest to minimize load times in order to create happier users (who are more likely to come back, make us money, etc). Luckily, the PHP developers have provided a number of tools that will help us inch our way towards that happy land where everything loads side by side.

This article introduces a very convenient way of loading content side by side using php, mysql and memcache.