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How to Spin up a RavenDB Cloud Database

How to Spin up a RavenDB Cloud Database

February 24, 2020

It takes more time to read about how to spin up a RavenDB Cloud Database than to spin it up. Judah Gabriel Himango does a great job of walking you through it. See how Judah spins up a free instance of RavenDB Cloud. He secures it with a certificate and then shows you the code to connect from a C# web app. Judah also guides you to start up a…

nosql-database
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Production postmortem: The self signed certificate that couldn’t

Production postmortem: The self signed certificate that couldn’t

February 21, 2020

RavenDB makes extensive use of certificates for authentication and encryption. They allow us to safely communicate between distributed instances without worrying about a man in the middle or eavesdroppers. Given the choices we had to implement authentication, I’m really happy with the results of choosing certificates as the foundation of our…

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Subscribing to deleted documents in RavenDB

Subscribing to deleted documents in RavenDB

February 20, 2020

Subscriptions in RavenDB gives you a great way to handle backend business processing. You can register a query and get notified whenever a document that matches your query is changed. This works if the document actually exists, but what happens if you want to handle a business process relating to document’s deletion ? I want to explicitly call…

Articles
Navigating the New Frontier of Information

Navigating the New Frontier of Information

February 19, 2020

What drives Big Data and the Internet of things is the unprecedented ability to move massive amounts of computing power to the edge on really cheap machines. It’s possible to set up a 3G connection on a device that is less than $5. A Raspberry Pi, which is a full-blown computer, is cheap enough that you can treat it as a disposable unit. What…

nosql-database
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Finding results by related documents

Finding results by related documents

February 18, 2020

These are not the droids you are looking for! – Obi-Wan Kenobi Sometimes you need to find a set of documents not because of their own properties, but based on a related document. A good example may be needing to find all employees that blue Nissan car. Here is the actual model: In SQL, we’ll want a query that goes like this: This is…

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An outage every 30 minutes

An outage every 30 minutes

February 17, 2020

We run a lot of benchmarks internally and sometimes it feels like there is a roaming band of performance focused optimizers that go through the office and try to find under utilized machines. Some people mine bitcoin for fun, in our office, we benchmark RavenDB and try to see if we can either break a record or break RavenDB. Recently a new machine…

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Random access compression and zstd

Random access compression and zstd

February 14, 2020

Compression is a nice way to trade off time for space. Sometimes, this is something desirable, especially as you get to the higher tiers of data storage. If your data is mostly archived, you can get significant savings in storage in trade for a bit more CPU. This perfectly reasonable desire create somewhat of a problem for RavenDB, we have…

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Pessimistic locking RavenDB

Pessimistic locking RavenDB

February 13, 2020

RavenDB always had optimistic concurrency, I consider this to be an important feature for building correct distributed and concurrent systems. However, RavenDB doesn’t implement pessimistic locking. At least, not explicitly. It turns out that we have all the components in place to support it. If you want to read more about what pessimistic locking…

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Speeding reports and traffic cameras in RavenDB

Speeding reports and traffic cameras in RavenDB

February 12, 2020

We are now working on proper modeling scenarios for RavenDB’s time series as part of our release cycle. We are trying to consider as many possible scenarios and see that we have good answer to them. As part of this, we looked at applying timeseries in RavenDB to problems that were raised by customers in the past. The scenario in question is…