Maintenance window tonight 12 months ago

Just a reminder that we’ll be having a two hour maintenance window tonight starting at 10p Pacific. 

While any downtime is unfortunate, we have been making noticeable improvements to site reliability and performance during these windows. A lot of the most recent work has focused on upgrading the caching layer we use.

As an example of the gains realized through this changes, we had one of our best Mondays in recent weeks today. Monday mornings are one of our busier times and we’ve had latency problems during the past several weeks. However, our external monitoring confirms that latency improved by more than 50% today compared to last Monday. 

Still lots more to do to make Twitter more reliable and scalable. But these improvements are getting us the headroom we need to make changes like bringing back IM functionality and restoring the API rate limit.