What is polymorphism? It is the ability to substitute one type in place of another. Why Polymorphism? This allows us to write code in a generic way. We can write our code against an expected contract without worrying about all the details of an implementation. For e.g. you can write some code against a generic…

Kap is an awesome tool for creating screen capture gifs. It captures a video of your screen and you can set the dimensions and frame-rate and export it a gif. This works great for a steady-paced process. However, when you have a process that involves a long wait, Kap will…

rsync -azP <remote-machine>:<remote-path> <local-path> Rsync is usually faster than scp. Here are what the options mean: -a: option treats the entire path as an archive (recursively downloads everything and preserves file attributes) -z: compress file before copying it over just for the file transfer. …

Log4j2 is a logging framework in Java. You can use it in your application or library to emit logs. A common pattern in Java is to have a Logging API that your application or library can be coded against to emit logs. …

This is an old unpublished post. Published now. Bounds are important. Unbounded or only partially bounded resources and operations pose a risk to latency and availability of your service. Bound resource usage (e.g. limit thread pool size) Bound queries (e.g. put a where condition limiting the date range, don’t make it open on one side or worse both sides; if it makes sense use the”limit” features in queries)

This is an old unpublished post. Published now. Good design can make a product look and feel amazing. As a developer who likes to build web apps, this is a skill I value and want to get better at. I do a lot of information hunting and reading to get better at design. I am just going to curate that information in this post. The first most amazing “Design for Developers” video I saw: Design for Developers: Making your Frontend Suck Less

This is an old unpublished post. Published now. Writing good code: Clean code: The content is excellent. Each section is short and to the point. This is a very pleasant read, and the content applies to most if not all languages. Mastering your tools: Java Effective Java: The title is…

This is an old unpublished post. Published now. Every technology out there is trying to simplify something. It is providing you an abstraction that offers you a simple interface to achieve complex results. Understand what the technology does. Understand why it works. This will allow you to simplify your designs…

The importance of code review: skipping to do a code review because it looks involved, could end up costing you — since you have to add to that code and it wasn’t well structured to begin with. One good heuristic on when something needs to be restructured is: if there…