Feeds

Twitter open sources MySQL enhancements

Go get the code at GitHub

The essential guide to IT transformation

Go get the code at GitHub Twitter has open sourced numerous tweaks it has made to MySQL, stating in a blog post that the open source database “is the persistent storage technology behind most Twitter data: the interest graph, timelines, user data and the Tweets themselves.”

The post says that “Due to our scale, we push MySQL a lot further than most companies,” and that the code it has released was developed “to improve the predictability of our services and make our lives easier.” It goes on to say that “we believe in sharing knowledge and that open source software facilitates innovation” and has therefore released a heap of code to GitHub.

Code the company has released includes what it calls:

  • Add additional status variables, particularly from the internals of InnoDB. This allows us to monitor our systems more effectively and understand their behavior better when handling production workloads.
  • Optimize memory allocation on large NUMA systems: Allocate InnoDB's buffer pool fully on startup, fail fast if memory is not available, ensure performance over time even when server is under memory pressure.
  • Reduce unnecessary work through improved server-side statement timeout support. This allows the server to proactively cancel queries that run longer than a millisecond-granularity timeout.
  • Export and restore InnoDB buffer pool in using a safe and lightweight method. This enables us to build tools to support rolling restarts of our services with minimal pain.
  • Optimize MySQL for SSD-based machines, including page-flushing behavior and reduction in writes to disk to improve lifespan.

If you’re in the USA later this week, Twitter’s DBA Team Lead Jeremy Cole will deliver a talk on the work at the MySQL Conference and Expo. ®

The essential guide to IT transformation

More from The Register

next story
Apple promises to lift Curse of the Drained iPhone 5 Battery
Have you tried turning it off and...? Never mind, here's a replacement
Mozilla's 'Tiles' ads debut in new Firefox nightlies
You can try turning them off and on again
Linux turns 23 and Linus Torvalds celebrates as only he can
No, not with swearing, but by controlling the release cycle
Scratched PC-dispatch patch patched, hatched in batch rematch
Windows security update fixed after triggering blue screens (and screams) of death
This is how I set about making a fortune with my own startup
Would you leave your well-paid job to chase your dream?
prev story

Whitepapers

Endpoint data privacy in the cloud is easier than you think
Innovations in encryption and storage resolve issues of data privacy and key requirements for companies to look for in a solution.
Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Advanced data protection for your virtualized environments
Find a natural fit for optimizing protection for the often resource-constrained data protection process found in virtual environments.
Boost IT visibility and business value
How building a great service catalog relieves pressure points and demonstrates the value of IT service management.
Next gen security for virtualised datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.