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MariaDB Berlin Meetup Notes & Slides

We had the first MariaDB Berlin Meetup on Tuesday 12.04.2016 at the Wikimedia Berlin offices at 7pm. More or less there were over 54 people that attended the event, a mix of MariaDB Corporation employees and community members. We competed with the entertainment at the AWS Summit Berlin which was apparently about 400m away! Food and drink were enjoyed by all, and most importantly there were many, many lightning talks (minimum 5 minutes, maximum 10 minutes – most were about 6-7 minutes long).

The bonus of all of this? Lots and lots of slides for you to see. Grab them from the Google Drive folder MariaDB Berlin meetup April 2016.

  1. Monty talked …
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Requests for MariaDB

There has been a recent spate of blog posts and tweets regarding MaxScale binary downloads requiring acceptance of an Evaluation License that some in the community perceived to be onerous.  MariaDB took quick action to make these binaries available without accepting the license, and were quickly – and rightly – praised for listening to the community. [UPDATE 2016-04-14: It turns out the measures MariaDB took were incomplete, and that accessing downloads of MaxScale still require accepting the Evaluation License terms – see comments for details]  The MaxScale binaries are part of a larger …

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MaxScale binaries are now available

UPDATE: Short story: ignore the next update and read the post. Long story: the original post was a mistake, as explained in the next update. But then, MariaDB released free MaxScale binaries and everything I wrote in the post is now correct.

UPDATE 2016-04-14: It seems that I was mistaken. MaxScale download page is a bit different from MariaDB Enterprise page, and does not explicitly require us to accept terms of use before download. But we accept those terms while creating an account.

So, MaxScale binaries cannot be used in production without paying for MariaDB enterprise. Thanks to the persons who commented this post and pointed my mistake. My apologies to my readers.

I won’t delete this post because I don’t want the comments to disappear, as they express opinions of some community members.

My jestarday’s post …

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Comments on MaxScale binaries

I’m writing this post after reading Downloading MariaDB MaxScale binaries, from Percona’s MySQL Performance Blog.

I was already aware about the problem: MaxScale is open source, but the binaries are not free. You can download them and use them for testing, but if you want to use them in production, you’ll need to buy MariaDB Enterprise.

Note that MaxScale Docker images seem to have the same problem. I’ve tried some of them, but all those I’ve tried were running MariaDB Enterprise binaries, so using them in production is illegal (unless you pay).

The alternative is… compiling MaxScale. I had problems in doing so and couldn’t solve those problems myself. From the MaxScale Google Group, I see that Justin Swanhart had the same problems… so I don’t feel particularly stupid for that.

After some …

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MariaDB/MySQL missing features: View comments

The COMMENT clause

All database components (and database themselves) should have a COMMENT clause in their CREATE/ALTER statements, and a *_COMMENT column in the information_schema. For example:

CREATE PROCEDURE do_nothing()
        COMMENT 'We''re lazy. Let''s do nothing!'
BEGIN
        DO NULL;
END;
SELECT ROUTINE_COMMENT FROM information_schema.ROUTINES;

In fact most database objects have those clauses in MySQL/MariaDB, but not all. Views are an exception.

Comments in code

MariaDB and MySQL have multiple syntaxes for comments. Including executable comments (commented code that is only executed on some MySQL/MariaDB versions).

One can use comments in stored procedures and triggers, and those codes are preserved:

CREATE PROCEDURE do_nothing()
BEGIN
        -- We're lazy. …
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FOSDEM 2016 notes

While being on the committee for the FOSDEM MySQL & friends devroom, I didn’t speak at that devroom (instead I spoke at the distributions devroom). But when I had time to pop in, I did take some notes on sessions that were interesting to me, so here are the notes. I really did enjoy Yoshinori Matsunobu’s session (out of the devroom) on RocksDB and MyRocks and I highly recommend you to watch the video as the notes can’t be very complete without the great explanation available in the slide deck. Anyway there are videos from the MySQL and friends devroom.

MySQL & Friends Devroom MySQL Group Replication or how good theory gets into …

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(tweet) Summary of Percona Live 2015

The problem with Twitter is that we talk about something and before you know it, people forget. (e.g. does WebScaleSQL have an async client library?) How many blog posts are there about Percona Live Santa Clara 2015? This time (2016), I’m going to endeavour to write more than to just tweet – I want to remember this stuff, and search archives (and also note the changes that happen in this ecosystem). And maybe you do too as well. So look forward to more blogs from Percona Live Data Performance Conference 2016. In the meantime, here’s tweets in chronological order from my Twitter search.

  • crowd filling up the keynote room for #perconalive
  • beginning shortly, we’ll see @peterzaitsev at #perconalive doing his keynote
  • #perconalive has over 1,200 attendees – oracle has 20 folk, with 22 folk from facebook
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MariaDB Berlin meetup

Come meet the MariaDB Server and MariaDB MaxScale developers in Berlin (April 12 2016), talk about new upcoming things in MariaDB Server 10.2, as well as the next MariaDB MaxScale releases. Let’s not forget the talks about the upcoming developments with the Connectors.

It will be a fun-filled, information-packed night. Food & drink will be provided.

For more information and the opportunity to RSVP check-out our meetup page. RSVP soon as we only have 99 spaces available.

Speaking in April 2016

I have a few speaking engagements coming up in April 2016, and I hope to see you at some of these events. I’m always available to talk shop (opensource, MariaDB Server, MySQL, etc.) so looking forward to saying hi.

  • A short talk at the MariaDB Berlin Meetup on April 12 2016 – this should be fun if you’re in Berlin as you’ll see many people from the MariaDB Server and MariaDB MaxScale world talk about what they’re doing for the next releases.
  • rootconf.in – April 14-15 2016, tutorial day on 16 – I’ve not been to India since about 2011, so I’m looking forward to this trip to Bangalore (and my first time to a HasGeek event). Getting the email from the conference chair was very nice, and I believe I’m giving a keynote and a tutorial.
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MariaDB meetup in Helsinki on March 17th

If you are in Helsinki on Thursday next week March 17th, join us for the MariaDB meetup at Solinor. MariaDB team members will present the latest on MariaDB 10.1, MaxScale and MariaDB’s future roadmap. On stage Rasmus Johansson VP Engineering, MariaDB Corporation and Johan Wikman & Markus Mäkelä, developers of MaxScale. See the meetup page […]

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