Technical


Roles Attributes: Embracing a Chef Anti-Pattern

There is a fairly large foundation of concepts in Chef that new adopters need to wrap their heads around. And even once they have done that, it doesn’t become any easier to find the right methodology to use when building your infrastructure. One of the main ideas that we have embraced at SimpleReach is pervasive …

By eric

Recruiting Around a Series-A

If you’ve ever heard the saying, “the second you think it’s time for HR, it’s already too late,” then you’ll know what I’m talking about in this post. SimpleReach, having recently raised a round of funding, is now heavily in to the recruiting process on all fronts. But there is a dichotomy that comes with …

By eric

Batching Work For Efficiency and Tuning

I’ve been talking a lot about message systems in distributed architectures lately. And one of the slides I show in my talks is a slide about compressing messages before writes to the database. In other words, if you have 150k messages per second coming in which would translate 1:1 in writes and force your database(s) …

By eric

Range Repairs: Step-by-Step

It’s been a long time since I was able to run a repair on my Cassandra cluster. Basically since I went to 1.2, it just hasn’t been possible. And since repairs in Cassandra are pretty much a requirement to normal operation, this is clearly a problem. So in order to deal with the disarray that …

By eric

Adding Features to NSQ

After being a fairly heavy user of NSQ over the past year or so and finding that it was missing a few features, I decided to jump in and try to add them myself. The only issue was that I didn’t know Go. Since something as simple as not knowing the language the application was …

By eric

Learning to Hardware Hack at RobotsConf

I’ve been a programmer (if you can call me that) for quite a few years now. But for the most part, it’s really always been about designing software based systems. Even though these systems are larger than the average startup or SaaS company would get to work with, it’s (as I said) still about designing …

By eric

Adding Cross Zone Load Balancing in AWS

One of the new hotness features that Amazon added to their Elastic Load Balancers is cross zone load balancing. This offers the ability to have an unbalanced number of nodes per availability zone within an Amazon region. For instance, if you were load balances across us-east-1a, us-east-1b, and us-east-1c, then you needed to have the …

By eric

Redis Setup Notes and One-Liners

Being a heavy user of Redis has forced some weird Bash-fu and other commands when I want to find out how things are going. Because Redis is single threaded (see here for more information), I commonly run multiple Redis instances per machine. As a result, when running on AWS, I use a specific machine layout …

By eric

Cassandra Summit 2012 Highlights

I was lucky enough to have the opportunity to speak at the Cassandra World Summit 2012 on August 8 in Santa Clara. It was an amazing opportunity to share with the community the types of things that SimpleReach does with Cassandra. Not only that, I learned a lot about the roadmap and got to put …

By eric

What’s So Great About Cassandra’s Composite Columns?

There are a lot of things I really like about Cassandra. But one thing in particular I like in creating a schema is having access to composite columns (read about composite columns and their origins here on Datastax’s blog). Let’s start simple with explaining a composite columns and then we can dive right into why …

By eric

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