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Blog
A performance profile mystery: The cost of Stopwatch

A performance profile mystery: The cost of Stopwatch

August 9, 2023

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 the time (potentially many times a second) in as efficient…

Blog
QCon San Francisco Workshop: Building a database from the ground up

QCon San Francisco Workshop: Building a database from the ground up

August 8, 2023

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 be loosely based…

Blog
Struct memory layout optimizations, practical considerations

Struct memory layout optimizations, practical considerations

August 7, 2023

In my previous post I discussed how we could store the exact same information in several ways, leading to space savings of 66%! That leads to interesting questions with regard to actually making use of this technique in the real world. The reason I posted about this topic is that we just gained a very significant reduction in memory (and we…

Blog
Technology & Friends: Oren Eini on Building Projects that Endure

Technology & Friends: Oren Eini on Building Projects that Endure

August 4, 2023

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Blog
Struct memory layout and memory optimizations

Struct memory layout and memory optimizations

August 3, 2023

Consider a warehouse that needs to keep track of items. For the purpose of discussion, we have quite a few fields that we need to keep track of. Here is how this looks like in code: And the actual Warehouse class looks like this: The idea is that this is simply a wrapper to the list of items. We use a struct to make sure that we have good…

Blog
Production postmortem: The dog ate my request

Production postmortem: The dog ate my request

July 24, 2023

A customer called us, quite upset, because their RavenDB cluster was failing every few minutes. That was weird, because they were running on our cloud offering, so we had full access to the metrics, and we saw absolutely no problem on our end. During the call, it turned out that every now and then, but almost always immediately after a new…

Podcasts
Oren Eini on Building Projects that Endure

Oren Eini on Building Projects that Endure

July 21, 2023

Oren Eini began creating RavenDB 15 years ago and the project is still going strong. He discusses some of the things he learned about maintaining a project over many years so that they will endure.

Blog
Podcast: Hansleminutes – All the Performance with RavenDB’s Oren Eini

Podcast: Hansleminutes – All the Performance with RavenDB’s Oren Eini

July 21, 2023

I had a great time talking with Scott Hanselman about how we achieve great performance for RavenDB with .NET. You can listen to the podcast here, as usual, I would love your feedback. In this episode, we talk to Oren Eini from RavenDB. RavenDB is a NoSQL document database that offers high performance, scalability, and security. Oren shares his…

Podcasts
All the Performance with RavenDB’s Oren Eini

All the Performance with RavenDB’s Oren Eini

July 17, 2023

In this episode, Scott Hanselman talks to Oren Eini from RavenDB. RavenDB is a NoSQL document database that offers high performance, scalability, and security. Oren shares his insights on why performance is not just a feature, but a service that developers and customers expect and demand. He also explains how RavenDB achieves fast and reliable data […]