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OpenSSL Key and IV Padding

Bozho October 10, 2020

OpenSSL is an omnipresent tool when it comes to encryption. While in Java we are used to the native Java implementations of cryptographic primitives, most other languages rely on OpenSSL.Continue reading

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ElasticSearch Multitenancy With Routing

Bozho September 28, 2020

Elasticsearch is great, but optimizing it for high load is always tricky. This won’t be yet another “Tips and tricks for optimizing Elasticsearch” article – there are many great onesContinue reading

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Bulk vs Individual Compression

Bozho August 27, 2020

I’d like to share something very brief and very obvious – that compression works better with large amounts of data. That is, if you have to compress 100 sentences you’dContinue reading

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Encryption Overview [Webinar]

Bozho July 30, 2020

“Encryption” has turned into a buzzword, especially after privacy standards and regulation vaguely mention it and vendors rush to provide “encryption”. But what does it mean in practice? I didContinue reading

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Blockchainizing Existing Databases

Bozho July 17, 2020

Blockchain has been a buzzword for the past several years and it hasn’t lived to its promises (yet). The value proposition usually includes vague claims about trust and unmodifiability, butContinue reading

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Seven Legacy Integration Patterns

Bozho June 21, 2020

If we have to integrate two (or more) systems nowadays, we know – we either use an API or, more rarely, some message queue. Unfortunately, many systems in the worldContinue reading

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Using Multiple Dynamic Caches With Spring

Bozho June 15, 2020

In a third post about cache managers in spring (over a long period of time), I’d like to expand on the previous two by showing how to configure multiple cacheContinue reading

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AWS Alarms for Application Errors

Bozho April 17, 2020

Monitoring is key for any real-world application. You have to know what’s happening and be alerted in real time if something wrong is happening. AWS has CloudWatch for that, andContinue reading

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Automating the Change of WordPress Permalinks

Bozho March 19, 2020

WordPress is powering 35% of website. And while it may not be seen as very complex or interesting, it is one of the most prevalent technologies of our time. AndContinue reading

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An AWS Elasticsearch Post-Mortem

Bozho March 13, 2020

So it happened that we had a production issue on the SaaS version of LogSentinel – our Elasticsearch stopped indexing new data. There was no data loss, as elasticsearch isContinue reading

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