We have a team of developers using MacBook Pros for development, and they have to travel from one office to another. When the laptop joins the WIFI network at a different location, a brand new IP address is allocated. This should be an issue for most docker containers running on the laptop except Kafka as it has to advertise to DOCKER_HOST_IP. We can use ifconfig to find the real IP address and export it with the following command. Read More »

When you have an application that is not working as expected, the first thing would be checking the application logs to see if there are any errors there. Even if there are no errors, the information in logs can significantly help developers or supporters to understand how the application is working and where it stops. In production or any official testing environment, logging level must be set on error so that the application can focus on the business logic other than handling the logging. Read More »

Event-driven frameworks are very complicated as there are many moving parts. The following describes some troubleshooting techniques that can help developers to find out where would be the problem if the application is not working. Turn on Debug Log Please refer debug log for more details on changing debug level. Kakfa Troubleshooting When using Kafka in a docker container, it is a little inconvenient to use the command line tools within Kafka bin folder. Read More »

OpenAPI 3.0 specification is a very loose specification which gives the designer many options to write the spec. In most cases, developers write the code with annotations and generate the specification afterward. With an enterprise scale in mind, we encourage a design first approach. The outcome is not just a document but a specification that can be used to scaffold a new project and loaded during runtime to verify JWT scopes for security and validate requests to protect the business layer against attacks. Read More »

Swagger 2.0 specification is a very loose specification that gives designer many options to write the spec. In most cases, developers write the code with annotations and generate the specification afterward. With an enterprise scale in mind, we encourage a design first approach. The outcome is not just a document but a specification that can be used to scaffold a new project and loaded during runtime to verify JWT scopes for security and validate requests to protect the business layer against attacks. Read More »