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Articles

Multi-tenant database in NoSQL

August 31, 2021

How multi-tenant database can be arranged in NoSQL in general and in RavenDB in particular. For SaaS applications, multi-tenancy might seem like a simple problem at first glance. But just scratch the surface and it reveals itself as one of those topics where technical architecture concerns, business needs, security risks and user experience…

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Articles

Caching to Save Development Time and Improve Application Performance

August 30, 2021

There are only two hard things in computer science: cache invalidation and naming things.Phil Karlton Performance is a make-or-break factor in the success of your application. For example, 33% of potential buyers will abandon a shopping cart just one click away from finalizing if it takes too long to process. Amazon claims that each second…

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Use Cases

Database for SMS Marketing

August 30, 2021

NoSQL Database Helps Mitto Send SMS Messages Worldwide The TV Classics Channel just announced an all-night James Bond binge-fest, and there is no Double-O seven without a double cheese thick crust. You make the order, and to your surprise, it’s declined. No worries. You can use another account. Maybe a digital wallet. There’s enough in…

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Press Releases

RavenDB Distributed Database Stays Up While AWS Fails

August 26, 2021

AWS Disaster Rendered Non-Event by RavenDB Distributed Database A trillion-dollar cloud platform fails, bringing down countless instances of applications and their component parts while not a single RavenDB client experiences a service disruption. June 10, Frankfurt, Germany. The AWS Availability Zone in Germany went down due to a climate…

Videos

Developing a Winning Blockchain Application with RavenDB

August 23, 2021

Watch Federico Lois show you how to conquer the Bitcoin market by grabbing and processing trading information faster than the rest.

Blog

The cost of queue architecture, and why upfront payment will pay dividends

August 18, 2021

I wrote a post a couple of weeks ago called: Architecture foresight: Put a queue on that. I got an interesting comment from Mike Tomaras on the post that deserve its own post in reply. Even though the benefits of an async queue are indisputable, I will respectfully point out that you brush over or ignore the drawbacks. … redacted, see the real…

Blog

Implementing a count(distinct) query in RavenDB

August 17, 2021

A user called us to ask about how they can manage to move a particular report from a legacy system to RavenDB. They need to be able to ask questions such as the following one: This is an interesting issue, when you think about it from the point of view of a database engine. The distinct issue means that we have to keep state (all the unique…

Blog

Reference equality for dictionaries in Python

August 16, 2021

Implementing a unit of work in Python can be an interesting challenge. Consider the following code: This is about as simple a code as possible, to associate a tag to an object, right? However, this code will fail for the following scenario: You’ll get a lovely: “TypeError: unhashable type: ‘Item’” when you try this. This is because data classes…

Blog

Questions to answer when sizing a RavenDB node

August 13, 2021

A common question that is raised by customers is how to determine what kind of hardware you need to run RavenDB on. I’m sorry, but the answer is it’s depend, because there are a lot of variables to juggle, in this post, I”m going to try to give some insights about what sort of things you should consider when sizing your instances. In general, you…