Computing
[JMeter] Parameterize test in command level
JMeter is a free testing tools on SIT and load test in web API. It can execute test with command and GUI. To enable CI / CD, it is required to expose parameter which pass […]
Programming
Computing
[Javascript] Remove item in Array
In Java and C#, it is common to use List to store collection and it can simply remove item by method remove() . However, there is no list in Javascript so it need to handle […]
Computing
[Java] Remove empty items in List
For Removing empty item in list, it can be be done directly. When using method removeIf(), it will throw UnSupportOperationException . It caused by collection items cannot be removed.
Computing
[WCF] Resolve slow performance when concurrent access
Windows Communication Foundation (WCF) is a SOAP API services from Microsoft. Compare with ASP.net MVC, it can host as single application without rely on IIS and it is better to containerize backend application.
AWS
[AWS] Create file checksum file when S3 Object uploaded
Checksum ensure the integrity of file. In AWS S3, it also using eTag to do similar things. It create MD5 value and store in eTag. However, it is not a real checksum for s3 object […]
Angular
[Angular] Idle timeout checking
Idle timeout is one of the feature to enhance security by enforce logout if not used. In Angular, idle timeout can be done by rxjs. This demo will show the steps on adding and enable […]
Angular
[Typescript] Cookie handling in Angular
Cookie is one of the persistent storage in web client. It can ensure data persistent even page refresh. Compare with Local storage, it has additional security as it natively support expire date time. As contract, […]
Computing
Add ELK APM agent in Java project
Even APM agent can add parameter -javaAgent, but it will more flexible if embed in jar file. This demo will show how to add ELK APM agent inside Java gradle project.
Computing
Add cutom opentracing trace in Java project for Elastic stack
Opentracing is one of the open protocol for distribute tracing between microservices. With APM, it helps to identify service dependency and target bottom-neck during performance tuning. Even it merged to OpenTelmetry in recent years but […]
Programming
[Tools] Kubernetic
When maintain Kubernetes, mostly we need to use kubectl to get result and execute yaml. It is ok for developer as it provide the flexibilty to do what they need. However, for operator, it might […]