Tag: NoSQL

Couchbase rebalance freeze issue

We came across a Couchbase bug during a rebalance while upgrading online to 1.8.1 from 1.8.0. Via the UI, we upgraded our first node, re-added it to the cluster, and then set the rebalance off.  It was progressing fine, then…

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Distributed Counter Performance in HBase – Part 1

Recently I was tasked with setting up an HBase cluster to test compared against Amazon’s DynamoDB offering. The client had tested that it worked well for up to 10k updates/sec, but were concerned about the cost. I set up a…

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Exploring Configuration Management with Ansible

What is Ansible? Ansible is a configuration management and deployment system, like Puppet, Capistrano, Fabric, and Chef. Its aim is to be radically simple and let you use your existing scripts to help with cluster configuration and software deployment whenever possible….

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My First Experience with Cassandra – Part 1

The traditional NoCOUG SQL challenge has been launched this year with a twist: In the wake of the “BigData” trend/buzz, it’s now been upgraded to a “SQL and/vs. NoSQL” challenge. I took on the challenge, treading through my SQL comfort zone and thinking of ways I could bend relational algebra to solve the wicked puzzle suggested this year.

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Presentations for Ottawa Oracle User Group

The Ottawa Oracle User Group (OOUG) was kind enough to invite me to give presentations for a whole morning. The group was ultra engaged and asked a lot of good questions, so my usual 50-minute Big Data presentation ended up taking 100 minutes, and the rest of the content had to be squeezed a bit. I hope everyone had a good time!

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An overview of Riak

At PalominoDB, we constantly evaluate new technologies and database options for our clients’ environments. NoSQL databases are especially popular right now, and Riak is an increasingly-recommended option for highly available, fault-tolerant scenarios. Moss Gross attended an introductory workshop, and shares…

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Log Buffer #268, A Carnival of the Vanities for DBAs

Log Buffer Editions are marching along, and this one is once again all about Oracle, SQL Server, and MySQL, plus some peeks at some other glittering database technologies like PostgreSQL and DB2. Sit back and enjoy!

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My Second Day at MySQL Conference 2012 – Third Session

Here are my notes on the third session I attended today, entitled “MySQL Cluster Performance Tuning”.

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My Second Day at MySQL Conference 2012 – First Session

Here are my notes from the first session I attended today,entitled “Using and Benchmarking Galera in Different Architectures”.

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My Second day at MySQL Conference 2012 – Second Session

Here are my thoughts on the “Boost Your Replication Throughput with Parallel Apply, Prefetch, and Batching” presentation I attended today.

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