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What technologies are you running alongside MySQL?

 | June 19, 2013 |  Posted In: MySQL, Polls

In many environments MySQL is not the only technology used to store in-process data. Quite frequently, especially with large-scale or complicated applications, we use MySQL alongside other technologies for certain tasks of reporting, caching as well as main data-store for portions of application. What technologies for data storage and processing do you use alongside MySQL […]

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MySQL 5.6 – InnoDB Memcached Plugin as a caching layer

 | March 29, 2013 |  Posted In: MySQL

A common practice to offload traffic from MySQL 5.6 is to use a caching layer to store expensive result sets or objects.  Some typical use cases include: Complicated query result set (search results, recent users, recent posts, etc) Full page output (relatively static pages) Full objects (user or cart object built from several queries) Infrequently […]

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MySQL caching methods and tips

 | April 4, 2011 |  Posted In: Insight for Developers, MySQL

“The least expensive query is the query you never run.” Data access is expensive for your application. It often requires CPU, network and disk access, all of which can take a lot of time. Using less computing resources, particularly in the cloud, results in decreased overall operational costs, so caches provide real value by avoiding […]

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More on dangers of the caches

 | September 23, 2010 |  Posted In: Insight for Developers, MySQL

I wrote couple of weeks ago on dangers of bad cache design. Today I’ve been troubleshooting the production down case which had fair amount of issues related to how cache was used. The deal was as following. The update to the codebase was performed and it caused performance issues, so it was rolled back but […]

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On Good Instrumentation

 | May 31, 2010 |  Posted In: Insight for Developers, MySQL

In so many cases troubleshooting applications I keep thinking how much more efficient things could be going if only there would be a good instrumentation available. Most of applications out there have very little code to help understand what is going on and if it is there it is frequently looking at some metrics which […]

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Beyond great cache hit ratio

 | May 19, 2010 |  Posted In: Insight for DBAs, MySQL

I worked with application recently which has great memcached hit ratio – over 99% but yet still has average page response time over 500ms. Reason ? There are hundreds memcached gets and even though they have some 0.4ms response time they add up to add hundreds of ms to the total response time.

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Active Cache for MySQL

 | January 10, 2010 |  Posted In: Insight for Developers, MySQL

One of the problems I have with Memcache is this cache is passive, this means it only stores cached data. This means application using Memcache has to has to special logic to handle misses from the cache, being careful updating the cache – you may have multiple data modifications happening at the same time. Finally […]

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MySQL-Memcached or NOSQL Tokyo Tyrant – part 2

 | October 16, 2009 |  Posted In: Benchmarks, Cloud and NoSQL, MySQL

Part 1 of our series set-up our “test”  application and looked at boosting performance of the application by buffer MySQL with memcached.  Our test application is simple and requires only 3 basic operations per transaction 2 reads and 1 write.  Using memcached combined with MySQL we ended up nearly getting a 10X performance boost from […]

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