Partial writes, IO_Uring and safety
In my previous post, I discussed how Linux will silently truncate a big write (> 2 GB) for you. That is expected by the interface of write(). The problem is that this behavior also applies when you...
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RavenDB 7.1: Next-Gen Pagers
Even though RavenDB 7.0 isn’t quite out of the gate yet (expect the release very soon), I want to start talking about the RavenDB 7.1 release. This release is going to represent the biggest change in...
View ArticleRavenDB 7.1: Write modes
In the previous post, I talked about a massive amount of effort (2+ months of work) and about 25,000 lines of code changes. The only purpose of this task was to remove two locks from the system. During...
View ArticleRavenDB 7.1: Reclaiming disk space
After describing in detail the major refactoring we did for how RavenDB (via Voron, its storage engine) has gone through, there is one question remaining. What’s the point? The code is a lot simpler,...
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RavenDB 7.1: Shared Journals
I wrote before about a surprising benchmark that we ran to discover the limitations of modern I/O systems. Modern disks such as NVMe have impressive capacity and amazing performance for everyday usage....
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On the role of design documents
When we build a new feature in RavenDB, we either have at least some idea about what we want to build or we are doing something that is pure speculation. In either case, we will usually spend only a...
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