MySQL continues to improve in terms of performance. To get the best out of MySQL, you must learn to analyze your system and use tools to monitor, evaluate and tune the MySQL Server.

The MySQL Performance Tuning training is a 4-day instructor-led course which teaches you to configure the database for performance, tune application and SQL code, tune the server, examine storage engines and assess the application architecture.

You can take this course through the following event types:

• Training-on-Demand: Start training within 24 hours of registration. Follow this course at your own pace through streaming video of instructor delivery and scheduling time to do lab exercises at a time that suits you.
• Live-Virtual: Attend …

Read the original article at Five More Things Deadly to Scalability

Join 6000 others and follow Sean Hull on twitter @hullsean. 1. Slow Disk I/O – RAID 5 – Multi-tenant EBS Disk is the grounding of all your servers, and the base of their performance. True with larger and larger main memory, much is available in cache, a server still needs to constantly read from disk [...]

For more articles like these go to Sean Hull's Scalable Startups

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Many MySQL users are familiar with using slow query logs and tools such as mysqldumpslow to identify poor-performing SQL commands, and MySQL 5.6 introduces new powerful tools in PERFORMANCE_SCHEMA.  Both allow you to identify the date/time and the user account from which the command was issued, which is helpful – but if you’re using MySQL Enterprise Monitor (MEM), you can immediately identify the actual line of code responsible for the SQL command in question.  This happens to be one of my favorite and powerful features of MEM, but it’s frequently overlooked by new and experienced MEM users alike, so I’m writing the post to highlight it.

MySQL Enterprise Monitor, of course, is a commercial product that’s part of the MySQL Enterprise subscription.  But it’s freely-available under 30-day trial terms for evaluation from Oracle Software Delivery Cloud – if …

This week we talk about server and status variables relating to the performance schema and the ps_helper tool. Ear Candy is an sql_mode bug, and At the Movies is a performance_schema and ps_helper webinar.

Performance Schema Variables
MySQL 5.5 performance schema variables
MySQL 5.6 performance schema variables - many options are auto-sized


SHOW GLOBAL VARIABLES LIKE 'performance_schema%';

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This week we explain performance_schema a bit deeper. In Ear Candy, we talk about max_binlog_cache_size and At the Movies presents Max Mether of SkySQL talking about "High Availability Solutions for MySQL".

Events
DB Hangops - every other Wednesay at noon Pacific time
Upcoming MySQL events

Training
SkySQL Trainings
Tungsten University trainings

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Thanks to Tim Callaghan for speaking Tuesday night at the Effective MySQL New York meetup on Fractal Tree Indexes : Theory and Practice (MySQL and MongoDB). There was a good turnout and a full room to learn how the TokuDB storage engine from Tokutek is changing how to handle big data in MySQL.

Also interesting is how the same technology has been applied for use in MongoDB including giving MongoDB transactions; a big change for NoSQL.

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This week we discuss the basics of using the performance schema in MySQL 5.5 and 5.6. Ear Candy is about a temporal gotcha when using dates and times that do not exist, and At the Movies is David Stokes giving some useful for System Administrators who also are in a DBA role.

News
Continuent's Tungsten Replicator is now completely open source
TokuDB is now open source

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Recentemente respondi algumas questões referente a lag(atraso) na replicação, o que percebi é que muita gente não intende corretamente como este processo funciona internamente no MySQL e o porque do lag acontecer:

• MySQL replication: most important config parameters for performance on slave server?
• mysql replication delay very serious

Veja a figura abaixo, ela representa replicação assíncrona no MySQL, recomendo que você leia meu outro post sobre o assunto:

…

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These days I’ve answer some questions about replication lag, and I realized that most of people does not correctly understand how this process works internally on MySQL, and why does delays happen:

• MySQL replication: most important config parameters for performance on slave server?
• mysql replication delay very serious

See the bellow image, it represents asynchronous replication on MySQL, I highly recommend you to read my other post:

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This week we discuss Tungsten and MySQL 5.6 replication with friend of the show, Giuseppe Maxia (aka the Data Charmer). Ear Candy is MariaDB's Cassandra storage engine, and At the Movies is Giuseppe's "MySQL 5.6 Replication – features and usability" video from Open Database Camp.

Events
DB Hangops in May will be Wed May 8th and 22nd.
Upcoming MySQL tech tours

Training
SkySQL Trainings
Tungsten University trainings

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