Dimensional Data Modeling and Change Data Capture (CDC) is important in every data warehouses. Kimball and his team introduced dimensional data modeling to the world in late 90s and since then it became kind of de-facto standard to structure data warehouses. One of the concept in dimensional data modeling is…

Project Loom is now available as a preview feature as part of Java 19. It introduces virtual threads to Java platform which is a lightweight implementation of threads that is provided by the JDK rather than the OS. About one year ago I came across this YouTube video where Brian…

Modern web applications developed on top of non-blocking I/O facilities can easily serve tens of thousands of concurrent requests per host (with moderate sized hardware). Together with horizontal scalability, scenarios where applications serve millions of concurrent requests are not new. Each web application instance being deployed is supposed to handle…

Apache HTTP client library is often used in Java applications. It is easy to use and comes with both blocking and non-blocking(async) variants. Even after introduction of built-in HTTP client inside modern JDK where developers may prefer to use built-in HTTP client - Apache HTTP client still could be part…

In Tuning linux network stack - with examples - Part 1, I discussed about how tuning certain kernel level settings can affect capacity of the networking application. In this post I am going to discuss about settings which could affect throughput for the established socket connections Similar to the previous…

By default Linux network stack (network related kernel settings) is configured for general-purpose networking requirement. This default configuration is usually adequate for typical usages such as running desktop applications and some sorts of server applications where full potential of available network capacity may not need to be utilized. …

Sometimes there is a need to call native library functions (through JNI) from the application running on Java. For example, there are libraries available with fast native implementation algorithms like compression, cipher-suites, machine learning etc related use cases where processing can be done without all JVM overheads, in other cases…

Java comes with built-in implementation of platform independent crypto algorithms which are used by default to handle SSL/TLS traffic. However this Java based built-in implementation is deemed slow and CPU intensive for many years. …