As part of a system refactoring process, we replaced a legacy search system with Elasticsearch. Being a core component of our system it literally took us more than half a year to move to the new system and make all the features work again, and it required us being absolutely sure of Elasticsearch's ...

I've recently come across this question in StackOverflow titled "Many to many design for NoSql (RavenDB)", and I thought it is a really good case of a very frequently asked question worth featuring here:

I have two simple objects, 'user' and 'events'. A user can enter many events and an e...

I've been sitting on this one for a while now because I wanted to verify my theory. Well, it seems like I am on to something here and its time to share.

Here is how I joined the BitCoin ride with low costs, somewhat lower risks, and if I'm right - with much bigger potential for a great profit. You a...

This post was triggered by Jon Skeet's tweet about adding Hebrew calendar support to NodaTime. Jon complained that because the hour and day lengths change all the time in the Hebrew calendar, it requires some fundamental changes to NodaTime's inner workings.

Well Jon, I think you can save yourself t...

In RavenDB, indexes play a crucial part in answering queries. Without them, it is impossible to find data on anything other than the document ID, and therefore RavenDB becomes just a bloated key/value store. Indexes are the piece of the puzzle that allows rich queries for data to be satisfied effic...

Last week I spoke at Oredev, an awesome conference in cold Sweden. It was fun meeting all those great people, and the atmosphere was really great.

My first talk was an introductory level one on Elasticsearch - what it is, how it can be used and what it can do. I really like this shiny piece of techn...

Project Kudu is a great open-source initiative for enabling git deployments of websites. That is, you can push your source code or binaries to git as means of deployment. If it's the sources you pushed, Kudu will compile them and run tests and will only deploy if successful. This is like Heroku, App...

In my last post in the series I gave an introduction to search engines. I showed the concept of an Inverted Index and how it helps with performing searches on large amounts of texts quickly and efficiently. In this post I'll be discussing the issue of scaling out a search engine.

We chose Apache Luc...

A few weeks ago I gave a talk in DevDay 2013 in Krakow, Poland, in what could be described as a totally awesome conference. I wish it lasted more than one day... Way to go Raf, Michael and team!

My talk was a quick introduction to full-text search with Lucene and ElasticSearch. Other than focusing o...

I was referred to the following video by a friend, and it completely blew my mind. It got my attention at the beginning when the speaker, ex-HP researcher, said joining Google was like taking the red pill:

To me, there are two types of infrastructures - those who manage their servers manually, and ...