I want to show you some issues that I encountered while applying the Grok filter plugin on logs. Most of my problems resulted from overusing the GREEDYDATA pattern (.*). I tested my solutions with the Grok Debugger app where you can also find the list of available patterns.
Having automated database migrations will significantly ease managing schema development. With Spring Boot support we can effortlessly handle versioned SQL scripts.
An in-memory database may be sufficient during the early phase of project development. However, sooner or later you will need to persist some data. Read this post to learn how to configure a Spring Boot app to use a PostgreSQL database.
Having a ready to use database instance that every programmer can quickly run on their machine can save a lot of time. In this article you will learn how to set up a PostgreSQL database in a Docker container.
In case you want to store a DDL script that creates a database in your Spring Boot project in a file, all you need is to add a few properties to the app configuration.
Every now and then we have to establish a new development environment on our machine. Installing lots of tools can get really cumbersome as we are obliged to remember what we need and in what order the installations should be run. In this post I will show you an example bash script that I use for installing a base set of tools. The script can be easily customized and you can fork it on GitHub and adjust to your needs. I strongly recommend using this in your company to make sure that every programmer will be able to install all tools required to work on a given project in a matter of minutes.
When our frontend gets a paginated result from an API, we have to handle not only paging, but also sorting of the outcome. In this post, I show how to create a custom sorting component that works well with a standard Page object returned by a Spring Boot API.
When pagination is performed on the backend side of a web application, we need to support this feature on the frontend. Read this post to see how you can easily handle Spring Boot Page object in an Angular app.
Each API requires comprehensive documentaiton. You can generate it using Swagger for a REST API. Its clients will get standardized and thorough insight while you won’t need to worry about keeping it up to date. Learn how to configure Swagger, generate documentation in JSON and render it with Swagger UI when frontend is supported by Angular.
This post covers issues that may occur when you map entities with ManyToOne bidirectional association. Read about mapping this relation while avoiding LazyInitializatinException, circular dependencies, n+1 select problem, wasting resources and false-positives in tests.