24 April 2014

The Ruby Reflector

Topic

Cassandra

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…- Tokutek, LevelDB, RocksDB, HBase, Cassandra. We also get reports of amazing performance. I think there is too much focus on peak performance and not enough on predictable performance and manageability."

In my humble opinion, this is the current state of the MySQL industry: learning, developing, and establishing how to manage MySQL. Although the new WebScaleSQL collaboration is focused prima facie on performance at scale, as Mark said in his blog post, "Predictable …

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By Todd Hoff of High Scalability 10 days ago.
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…management, and have the state replicated in the backup region. That or sidestep ELB in your region to a team of stateless load balancers that terminate SSL.

Jeremy Edberg to a question about how to run databases without EBS, says : By having good replication, either hand rolled or built in.

At Netflix we use Cassandra and store all data on local instance storage. We don't use EBS for databases.

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By Todd Hoff of High Scalability 1 month ago.
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Counting at scale in a distributed environment is surprisingly hard . And it's a subject we've covered before in various ways: Big Data Counting: How to count a billion distinct objects using only 1.5KB of Memory , How to update video views count effectively? , Numbers Everyone Should Know (sharded counters) .

Kellabyte (which is an excellent blog) in Scalable Eventually Consistent Counters talks about how the Cassandra counter …

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By Mike Gunderloy of A Fresh Cup 1 month ago.
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Cequel - Ruby ORM for Cassandra.

AdequateRecord Pro: Like ActiveRecord, but more adequate - A preview of some speed improvements coming in Rails 4.2.

Introducing the Revamped Server UI - At Scout, that is.

Radiation-hardened Quine - A tour de force of useless ruby.

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MariaDB contains the CONNECT engine (to join data between Oracle and Cassandra for example) and SPIDER storage engine (for automatic " sharding"). Colin Charles from Monty Program Ab will talk about new MariaDB features

Percona Live London is approaching fast so be sure to register today !

The post New MySQL features, related technologies at Percona Live London appeared first on MySQL Performance Blog .

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By Mike Perham of 6 months ago.
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"In theory, theory and practice are the same. In practice, they are not." — Albert Einstein

The original Dynamo paper created a wave of interest in the CAP theorem and gave rise to the recent crop of distributed NoSQL systems: Cassandra, Riak, et al. These systems are generally CP where C can be tuned to provide more availability than a single system could provide, i.e. they do their best to provide CAP according to the application's needs. For instance, …

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On Labnotes 9 months ago.
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Details and summary design pattern

Figure and figcaption design pattern

§ Start the morning right with a dose of Responsive Cereal .

§ HTML design geekery. Coding Cards .

§ Big Data Borat :

When choose database remember Cassandra good in write, HBase good in read, Mongo good in delete. # nosql

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By Damien Katz of Damien Katz 12 months ago.
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We tend to think of working hard as a good thing. We value a strong work ethic and determination is the face of adversity. But if you are working harder than you should to get the same results, then it's not a virtue, it's a waste of time and energy. If it's your business systems that are working harder than they should, it's a waste of your IT budget.

Dynamo based systems work too hard. SimpleDB/DynamoDB, Riak, Cassandra and Voldemort are all based, at least in part, …

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By Thom Mahoney of Engine Yard Developer Blog over 1 year ago.
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…terabytes of ephemeral local SSD storage. Databases such as Riak, Cassandra, and MongoDB can take advantage of super fast reads and writes while avoiding data loss in clustered environments.

The key word is ephemeral—if your instance dies, so does your data. This is why we would only recommend the use of local SSDs in clustered database setups (with three or more nodes) or for use in applications where data can safely be lost.

Enabling The Feature

We have created an early access …

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On paperplanes almost 2 years ago.
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…the better-known NoSQL databases, including Riak, Redis, Cassandra, CouchDB and MongoDB. That was in early 2011. I wrote a chapter on MongoDB, but it didn't feel right to me, so I tried a different approach on the Riak chapter, much more focused on being practical and introducing the user-facing concepts in a streamlined way, building up as the book progresses.

That approach felt much more natural to me, so eventually I started on the Redis chapter and thought I nailed it. …

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