Application Framework 程式框架 Archives

[Spring] Utilize spring web client

2022-08-20 C.H. Ling 0

Since WebClient replace RestTemplate to call external API in Spring. There are some patrices I lesson learnt in my work and summarize as below.

[Angular] Idle timeout checking

2021-07-05 C.H. Ling 9

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 […]

[Typescript] Cookie handling in Angular

2021-06-09 C.H. Ling 0

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, […]

Add cutom opentracing trace in Java project for Elastic stack

2021-03-31 C.H. Ling 0

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 […]

[Spring] Enable logging to ELK with Log4J2 and Sprint cloud sleuth

2021-02-10 C.H. Ling 0

To enable ELK logging, mostly it will use logback as logging library. However, when migrate existing application, eliminate dependency change is one of the factor to ensure application stability. In this demo, we will use […]

[Spring] Resolve issue on no trace Id and spin Id logged

2021-02-05 C.H. Ling 0

Spring Cloud Sleuth is one of the spring cloud component which used to corelate log between different service. It is useful when tracking problem and it can draw the full picture from start to end. […]

[Java] Create custom logging aspect with Springboot AOP

2020-12-31 C.H. Ling 0

Aspect-oriented Programming (AOP) enable developer design application with more “module-ize”. This example will show how to use AOP to log method execution in SpringBoot AOP.

[Java] Set auto reconnect in Spring data JPA

2020-12-22 C.H. Ling 0

To ensure service availability, Most application nee to restart service to resume. However, auto reconnect is a must requirement to ensure it can self-heal. For Spring data JPA, it can be done without alter code.

[SpringBoot] Add custom metric in spring boot application and show in AWS CloudWatch

2020-11-26 C.H. Ling 1

Application Performance Monitoring is one of the method to ensure application’s availability and status. However, most of them only can check the platform status (e.g. CPU usage / Thread / Memory / etc), some organization […]