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Displaying posts with tag: General (reset)

Table and tablespace encryption on MariaDB 10.1.3
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Introduction

For the moment, the only engines that fully support encryption are XtraDB and InnoDB. The Aria storage engine also supports encryption, but only for temporary tables.

MariaDB supports 2 different way to encrypt data in InnoDB/XtraDB:

  1. Table encryption: Only tables which you create with PAGE_ENCRYPTION=1 are encrypted. This feature was created by eperi.
  2. Tablespace encryption: Everything is encrypted (including log files). This feature was created by Google and is based on their …
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Causal Consistency
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Introduction

Causal consistency [1] is one of the consistency criteria that can be used on distributed databases as consistency criteria.

Distributed database provides causal consistency if read and write operations that are causally related are seen by every node of the distributed system in the same order. Concurrent writes may be seen in different order in diffrent nodes.  Causal consistency is waker than sequential consistency [2] but stronger than eventual consistency [3]. See earlier blog for more detailed description on eventual consistency …

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MariaDB Connectors moved to github
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Good bye bzr, welcome git!

After latest releases we moved development of MariaDB Connectors for C, ODBC and Java from launchpad to github.

The connector repositories can be found under https://github.com/MariaDB

Repository-Links:

Feel free to watch, fork and contribute!

The Top 6 Most Popular Posts from 2014
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This year is just about over. It’s almost time to welcome 2015. In celebration of a fun year of sharing Sphinx-things, let’s review 2014′s most popular posts. 1: Use Sphinx With MySQL This one leads by a huge margin. Not a surprise. Many MySQL users get frustrated with MySQL’s native fulltext search after hitting a [...]

Full table scans and MySQL performance
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High season is coming, how do you make sure that MySQL will handle the increased load? Stress tests could help with that, but it’s not a good idea to run them in a production environment. In this case Select_scan, Select_full_join and other MySQL counters could quickly give you an idea of how many queries are not performing well and could cause a performance degradation as the load goes up.

Select_scan from SHOW GLOBAL STATUS indicates how many full table scans were done since last MySQL restart. Scanning the entire table is a resource intensive operation. It also forces MySQL to store unnecessary data in the buffer pool, wasting memory and IO …

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Sphinx Search Quick Tour using a MySQL Datasource
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You can find a ‘Quick Usage Tour’ in our documentation. In this post, I’m going to walk you through that tour and elaborate on a few things. Enjoy! Things to consider I’m assuming you’ve already installed MySQL. Sphinx does not require that you use MySQL, but the following examples do. I’m installing Sphinx on Ubuntu [...]

MariaDB 10.1.1: Galera support
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MariaDB 10.1 server is now “Galera ready” with the latest 10.1.1 release. It includes wsrep (write set replication) patch that enables server to load the wsrep provider (galera) library and interact with it to provide multi-master synchronous replication support. The patch implements hooks inside server and storage engines to populate and apply the write sets on sender and receiver nodes in a cluster respectively. The wsrep patch also adds a number of system and …

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Set up an SSL-encrypted connection between Sphinx and MySQL
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A Wolf, a Dolphin and a Sphinx walk into a bar… nevermind. We’ll skip the jokes. This post is about using SSL to set up a secure connection between MySQL and Sphinx. Serious stuff! The Idea It simple. We’re going to use Sphinx to index some data from MySQL across a secure connection. So, we’ll [...]

MariaDB 10.1.1: triggers for RBR
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Sometimes users ask for something that doesn’t really make sense. On the first glance. But then you start asking and realize that the user was right, you were wrong, and it is, actually, a perfectly logical and valid use case.

I’ve had one of these moments when I’ve heard about a request of making triggers to work on the slave in the row-based replication. Like, really? In RBR all changes made by triggers are replicated from the master to slaves as row events. If triggers would be fired on the slave they would do their changes twice. And anyway, assuming that one only has triggers one the slave (why?) in statement-based replication triggers would run on …

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MariaDB 10.1.1: engine_condition_pushdown flag deprecated
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Let me start with a little story. You sit in your house near the fireplace in the living room and need a book from the library… Eh, no, sorry, wrong century. You’re building a robotic arm that will open your beer or brew your coffee or supply you with whatever other drinks of your choice… while you’ll be building the next robotic arm. So, you — soldering iron in one hand and Arduino in another — ask your little brother to bring a box with specific resistors (that you unexpectedly run out of) from the cellar. The problem — your brother is small and cannot tell a resistor from a respirator. You explain that it’s small thing with two …

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Showing entries 1 to 10 of 1050 10 Older Entries

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