Tuesday, 27th January 2009
Sharding Counters on Google App Engine. “While the datastore for App Engine scales to support a huge number of entities it is important to note that you can only expect to update any single entity, or entity-group, about five times a second”. This article explains a technique for sharding writes across multiple counters in detail, including a way to keep a memcache counter updated at the same time for faster reads. # 8:27 pm
A Year Later, AOL Is Contemplating A Bebo Sale. Ignore the headline and read the actual article—Mike Butcher’s description of how Bebo targeted old fashioned TV advertising agencies while other social networks ignored them completely is riveting. # 6:13 pm
Switching from scripting languages to Objective C and iPhone: useful libraries. Matt Biddulph collects together some very useful libraries for developers just getting started with Objective-C (though I’m not too keen on the title). # 5:50 pm