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Don’t Reinvent Date Formats

Bozho January 4, 2022

Microsoft Exchange has a bug that practically stops email. (The public sector is primarily using Exchange, so many of the institutions I’m responsible for as a minister, have their emailContinue reading

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Simple Things That Are Actually Hard: User Authentication

Bozho November 30, 2021

You build a system. User authentication is the component that is always there, regardless of the functionality of the system. And by now it should be simple to implement itContinue reading

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Obtaining TLS Client Certificates In Spring Integration

Bozho August 19, 2021

Spring Integration is a very powerful and extensible framework for, well, integrations. But sometimes it’s not trivial how to get some information that yo need. In my case – aContinue reading

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Every Serialization Framework Should Have Its Own Transient Annotation

Bozho June 26, 2021

We’ve all used dozens of serialization frameworks – for JSON, XML, binary, and ORMs (which are effectively serialization frameworks for relational databases). And there’s always the moment when you needContinue reading

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List of Open Source Security Tools

Bozho April 11, 2021

As a founder of a security company, I’m constantly looking for open source tools to either incorporate in our offering, or get inspiration from, or provide integration with. And thereContinue reading

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Always Name Your Thread Pools

Bozho March 20, 2021

Our software tends to use a lot of thread pools – mostly through java.util.concurrent.ExecutorService implementations (Created via Executors.new…. We create these for various async use-cases, and they can be seenContinue reading

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Connecting to Kibana Within an AWS VPC

Bozho February 22, 2021

When you use the managed Elasticsearch service on AWS, you usually choose an encrypted connection (via KMS-managed keys), which means you can’t use just any tool to connect to yourContinue reading

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Elasticsearch – Scalability and Multitenancy [slides]

Bozho January 26, 2021

Last week I gave a talk in a local tech group about my experience with Elasticsearch at LogSentinel, and how we achieve multitenancy and scalability. Obviously, the topic of scalabilityContinue reading

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Content-Security-Policy Nonce with Spring Security

Bozho January 6, 2021

Content-Security-Policy is important for web security. Yet, it’s not mainstream yet, it’s syntax is hard, it’s rather prohibitive and tools rarely have flexible support for it. While Spring Security doesContinue reading

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Releasing Often Helps With Analyzing Performance Issues

Bozho December 26, 2020

Releasing often is a good thing. It’s cool, and helps us deliver new functionality quickly, but I want to share one positive side-effect – it helps with analyzing production performanceContinue reading

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