Simon Willison’s Weblog

Blogmarks tagged scaling in Mar, 2009

Filters: Type: blogmark × Year: 2009 × Month: Mar × scaling ×

Streams, affordances, Facebook, and rounding errors. I asked Kellan about scaling activity streams the other day. Here he suggests the best technique is not to promise a perfect stream (like Twitter does)—Facebook used to get away with 80% loss of update messages, but their new redesign has changed the contract with their users. # 19th March 2009, 2:02 pm

redis (via) An in-memory scalable key/value store but with an important difference: this one lets you perform list and set operations against keys, opening up a whole new set of possibilities for application development. It’s very young but already supports persistence to disk and master-slave replication. # 15th March 2009, 1:32 pm

What happened to Hot Standby? Hot Standby (the ability to have read-only replication slaves) has been dropped from PostgreSQL 8.4 and is now scheduled for 8.5. “Making hard decisions to postpone features which aren’t quite ready is how PostgreSQL makes sure that our DBMS is ”bulletproof“ and that we release close to on-time every year”. # 8th March 2009, 9:28 am

Database Sharding at Netlog, with MySQL and PHP. Detailed MySQL sharding case study from Netlog, who serve five billion page requests a month using thousands of shards across more than 80 database servers. # 2nd March 2009, 10:22 am