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Blog
Production postmortem: Broken networks and compressed streams

Production postmortem: Broken networks and compressed streams

July 18, 2022

RavenDB introduced a TCP compression feature in version 5.3. The idea is that all internal communication in the cluster (as well as subscriptions), will use the Zstd compression format to reduce the overall bandwidth utilization by RavenDB. We have always supported HTTP compression, and that closed the circle. The fact hat we are using Zstd means…

Blog
Recording: Non relational data modeling & Database engine internals

Recording: Non relational data modeling & Database engine internals

July 15, 2022

A few days ago I talked for close to three hours discussing RavenDB, modeling data in a non relational world and diving very deep into the internals of database engines in the .NET Zurich users group. You can watch the recording here.  As usual, any and all feedback is…

Blog
Upcoming webinar: Involving RavenDB in your Messaging Transactions

Upcoming webinar: Involving RavenDB in your Messaging Transactions

July 14, 2022

Next week I’ll be presenting a new major feature for the new RavenDB 5.4 release. Built-in ETL for Kafka and RabbitMQ. Instead of your documents just sitting there in your database, you can involve them in your messaging transactions. You can register for the webinar here… Please register, I would love to hear your feedback on the…

Blog
Production postmortem: Your math is wrong, recursion doesn’t work this way

Production postmortem: Your math is wrong, recursion doesn’t work this way

July 13, 2022

We got a call from a customer, a pretty serious one. RavenDB is used to compute billing charges for customers. The problem was that in one of their instances, the value for a particular customer was wrong. What was worse was that it was wrong on just one instance of the cluster. So the customer would see different values in different locations. We…

Videos
Involving your RavenDB Data in Messaging Transactions

Involving your RavenDB Data in Messaging Transactions

July 13, 2022

RavenDB CEO Oren Eini talks about the reduced complexity and new architectural patterns opened up by the addition of ETL to Kafka and RabbitMQ.

Blog
Production postmortem: The data corruption in the node.js stack

Production postmortem: The data corruption in the node.js stack

July 12, 2022

A customer called us, complaining that RavenDB isn’t supporting internationalization. That was a big term to unpack. It boiled down to a simple issue. They were using Hebrew text in their system, consuming us from a node.js client, and they observed that sometimes, RavenDB would corrupt the data. They would get JSON similar to this: { “Status”:…

Blog
Production postmortem: Out of memory on a clear sky

Production postmortem: Out of memory on a clear sky

July 11, 2022

A customer opened a support call telling us that they reached the scaling limits of RavenDB. Given that they had a pretty big machine specifically to handle the load they were expecting, they were (rightly) upset about that. A short back and forth caused us to realize that RavenDB started to fail shortly after they added a new customer to their…

Blog
The Art of Debugging

The Art of Debugging

July 8, 2022

I often end up being pulled into various debugging sessions. I find that having a structured approach for debugging can help you figure out what is going on and fix even the nastiest of bugs. This is a story about a few different bugs that I run into. We have some new features coming in RavenDB 5.4 which touch the manner in which we manage some…

Blog
My interview at Productive C#

My interview at Productive C#

July 7, 2022

I had an interview with Andrea Angella from Product C# earlier this week. I think that it was quite an interesting discussion, you can watch it here (or listen in Podcast…