Articles, posts and news about NoSQL database.
.NET Rocks: Data Sharding with Oren Eini1 minutes
You can listen to me talk to Carl & Richard on RavenDB Sharding here. What is data sharding, and why do you need it? Carl and Richard talk to Oren Eini about his latest work on RavenDB, including the new data sharding feature. Oren talks about the power of sharding a database across multiple servers […]
RavenDB version 6.0 is now live16 minutes
Today marks a very long journey for RavenDB as we release version 6.0 into the wild. This completes a multi-year effort on our part, which I’m really excited to share with you. In version 6.0 the RavenDB team had a number of goals, with the primary one being, as always, providing a simple and powerful […]
Optimizing a three-way merge8 minutes
Deep inside of the Corax indexing engine inside of RavenDB there is the notion of a posting list. A posting list is just an ordered set of entry ids that contains a particular term. During the indexing process, we need to add and remove items from that posting list. This ends up being something like […]
Not all O(1) operations are considered equal5 minutes
At some point in any performance optimization sprint, you are going to run into a super annoying problem: The dictionary. The reasoning is quite simple. One of the most powerful optimization techniques is to use a cache, which is usually implemented as a dictionary. Today’s tale is about a dictionary, but surprisingly enough, not about […]
Using RavenDB from Cloudflare Workers1 minutes
RavenDB is a multi-primary database, which means that it allows you to write to multiple nodes at the same time, without needing synchronization between them. This ability to run independently from the other nodes in the cluster (or even across clusters) makes RavenDB highly suitable for running on the edge. We have recently published a guide […]
Recording: RavenDB and High Performance with Oren Eini0 minutes
I spoke for over an hour about how you can build high-performance systems and how we utilize these techniques inside of RavenDB.
A twisted tale of memory optimization5 minutes
I was looking into reducing the allocation in a particular part of our code, and I ran into what was basically the following code (boiled down to the essentials): As you can see, this does a lot of allocations. The actual method in question was a pretty good size, and all those operations happened in […]
Unhandled Exception Episode 55: RavenDB and Database Internals – with Oren Eini0 minutes
You can listen to me talk with Dan in the Unhandled Exception podcast, where we dug deep into the internals of database engines. As usual, I would love your feedback.
A performance profile mystery: The cost of Stopwatch6 minutes
Measuring the length of time that a particular piece of code takes is a surprising challenging task. There are two aspects to this, the first is how do you ensure that the cost of getting the start and end times won’t interfere with the work you are doing. The second is how to actually get […]
QCon San Francisco Workshop: Building a database from the ground up1 minutes
I’m going to QCon San Francisco and will be teaching a full day workshop where we’ll start from a C compiler and an empty file and end up with a functional storage engine, indexing and more. Included in the minimum requirements are implementing transactions, MVCC, persistent data structures, and indexes. The workshop is going to […]