Welcome to the first day of the Percona Live Open Source Database Conference Europe 2017: Tutorials day! Technically the first day of the conference, this day focused on provided hands-on tutorials for people interested in learning directly how to use open source tools and technologies.

Today attendees went to training sessions taught by open source database experts and got first-hand experience configuring, working with, and experimenting with various open source technologies and software.

The first full day (which includes opening keynote speakers and breakout sessions) starts Tuesday 9/26 at 9:15 am.

Some of the tutorial topics covered today were:

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If you haven't done that, thinking that you would spare your energies for more juicy matters, I have news for you. What I explained in the previous part is exactly what you need to do to set up parallel replication. With just a tiny additional detail.
For the sake of the diligent readers who have followed the instructions with the first lessons, I won't repeat them, but I'll invite you to set the environment as explained in the first part.
Once you have a cluster up and …

Note: This blog post is part 1 of 4 on building our training workshop.

The Percona training workshop will not cover sharding. If you follow our blog, you'll notice we don't talk much about the subject; in some cases it makes sense, but in many we've seen that it causes architectures to be prematurely complicated.

So let me state it: You don't want to shard.

Optimize everything else first, and then if performance still isn't good enough, it's time to take a very bitter medicine. The reason you need to shard basically comes down to one of …