Thursday, April 30, 2020

Quick and easy: A multi-node Kubernetes cluster on CentOS 7 + QEMU/KVM (libvirt)

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Kubernetes is a popular container orchestration platform. As a developer understanding the environment in which your application is going to...
Wednesday, April 8, 2020

Spring: Blocking vs non-blocking: R2DBC vs JDBC and WebFlux vs Web MVC

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Spring Framework version 5, released in Sept 2017, introduced Spring WebFlux. A fully reactive stack. In Dec 2019 Spring Data R2DBC, a react...
Tuesday, March 31, 2020

The size of Docker images containing OpenJDK 11.0.6

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When running Java applications in containers, you need to be careful with your resources. If you're not careful with layering your image...
Sunday, February 23, 2020

Secure browsing using a local SOCKS proxy server (on desktop or mobile) and an always free OCI compute instance as SSH server

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Oracle provides several services as 'always free'. In contrast to Azure and Amazon, these include compute instances which remain ...
Saturday, February 1, 2020

HTTP benchmarking using wrk. Parsing output to CSV or JSON using Python

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wrk is a modern HTTP benchmarking tool. Using a simple CLI interface you can put simple load on HTTP services and determine latency, respon...
Thursday, January 2, 2020

pgAdmin in Docker: Provisioning connections and passwords

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pgAdmin is a popular open source and feature rich administration and development platform for PostgreSQL. When provisioning Postgres databas...
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Monday, December 23, 2019

Apache Camel + Spring Boot: Different components to expose HTTP endpoints

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Apache Camel is an open source integration framework that allows you to integrate technologically diverse systems using a large library of ...