DevMavens

ma•ven (mā'vən)

n.  A person who has special knowledge or experience;
an expert.

dev•ma•ven
('dev-mā'vən)

n.  An expert developer with great influence.

Oren Eini

Oren Eini is a senior developer / architect, focusing on architecture, data access and best practices. Most often, he is working on building complex business systems using .Net 2.0, NHibernate and Castle's Frameworks, providing training and guidance for the use of Object Relational Mapping, Inversion of Control, Domain Driven Design and other exciting topics. Oren is an active member in several leading Open Source projects, including (but not limited :-) ) NHibernate, Castle and Rhino Mocks.


Ayende @ Rahien | 27 Jun 2016 09:00

Designing RavenDB’s debug log systemSubscribe to this feed

Oren Eini writes "....I have talked before about the roles of logs (for debug statements) in RavenDB. In this post, I want to start talking about the actual concrete design we have of them. Overall guidelines (in no particular order): As little configuration as..."
Read more »  Designing RavenDB’s debug log system


Ayende @ Rahien | 26 Jun 2016 06:20

Code review: The bounded queueSubscribe to this feed

Oren Eini writes "....The following code has just been written (never run, never tested). It’s purpose is to serve as a high speed, no locking transport between two threads, once of them producing information, the other consuming it, in a bounded, non blocking manner...."
Read more »  Code review: The bounded queue


Ayende @ Rahien | 21 Jun 2016 09:00

On why RavenDB is written in C#Subscribe to this feed

Oren Eini writes "....Greg Young has an interesting reply to my post here. I’m going to reply to it here. RavenDB nor EventStore should be written in C#. That may be true for the EventStore, but it isn’t true for RavenDB. Being able to work with the .NET framework makes..."
Read more »  On why RavenDB is written in C#


Ayende @ Rahien | 16 Jun 2016 05:55

The Guts n’ Glory of Database Internals: Seeing the forest for the treesSubscribe to this feed

Oren Eini writes "....In my previous post, I talked about B+Trees and how they work. Unfortunately, just having a B+Tree isn’t enough. A B+Tree allows you to do queries (including range queries) over a single dimension. In other words, in the case of our users’ data, we..."
Read more »  The Guts n’ Glory of Database Internals: Seeing the forest for the trees


Ayende @ Rahien | 15 Jun 2016 07:09

re: Why you can't be a good .NET developerSubscribe to this feed

Oren Eini writes "....This post is in reply to Rob’s post, go ahead and read it, I’ll wait. My answer to Rob’s post can be summarize in a single word: In particular, this statement: it is impossible to be a good .NET developer. To work in a development shop with a team..."
Read more »  re: Why you can't be a good .NET developer


Ayende @ Rahien | 14 Jun 2016 09:00

The Guts n’ Glory of Database Internals: B+TreeSubscribe to this feed

Oren Eini writes "....The absolute worst thing about B+Trees is their name. It is like someone maliciously considered all the possible names and then selected the most confusing one. A B+Tree is a very different animal from a binary tree, in particular. In the previous..."
Read more »  The Guts n’ Glory of Database Internals: B+Tree


Ayende @ Rahien | 13 Jun 2016 09:00

The HashSet in the Hot SpotSubscribe to this feed

Oren Eini writes "....The title of this post reminds me of a Bones episode. This blog post is actually from an internal mail made by Federico Lois, as part of bigger perf work. Here is the calling code, note that this is typically called many times, and _pageStates is a..."
Read more »  The HashSet in the Hot Spot


Ayende @ Rahien | 10 Jun 2016 09:00

The high level interview question: Proposed solutionSubscribe to this feed

Oren Eini writes "....Here is the original post, and now let us get down to solving it… The key part of solving this issue is knowing that if you wait for the actual cluster change, there is very little that you can do. Technically speaking, if you have the keys, you can..."
Read more »  The high level interview question: Proposed solution


Ayende @ Rahien | 09 Jun 2016 09:00

The Guts n’ Glory of Database Internals: The LSM optionSubscribe to this feed

Oren Eini writes "....So far, we looked at naïve options for data storage and for building indexes, and we found them lacking. The amount of complexity involved was just too much, and the performance costs were not conductive for good business. In this post, I want to..."
Read more »  The Guts n’ Glory of Database Internals: The LSM option


Ayende @ Rahien | 08 Jun 2016 09:00

The Guts n’ Glory of Database Internals: Searching information and file formatSubscribe to this feed

Oren Eini writes "....In the previous post, I showed how we can use a simple text based format to store records, and what it means for reading / writing those records. Searching in such a system means that you have quite a bit of work to do, since you need to scan the..."
Read more »  The Guts n’ Glory of Database Internals: Searching information and file format


This Maven's Blog

Oren Eini

Ayende Rahien

Israel