Fix for : Scope 'session' is not active for the current thread; IllegalStateException: No thread-bound request found
Access spring Request scope cache in Singelton bean called from fork-join/thread pool
Replacing Mirror-Maker with linked in Brooklin
Problem: Mirror Maker has been used extensively to replicate data between different cluster of Kafka . Its time to expand horizon and create a more stable data transfer framework which removes shortcomings of Mirror Maker. Solution: Mirror Maker at the core is a kaka publisher subscriber taking data from one cluster and pushing to another... Continue Reading →
Websockets with Jmeter : Getting Performance Numbers
Performance testing of real time websocket built using Stomp broker using Junit .
Web socket java client for Stomp-Spring server side.
As an analysis for an issue I had to write a simple java web socket client site code connecting to a Spring based application on the server side with a stomp based web socket broker .
Identifying Hidden Kafka Consumer after re-balance
We started noticing that at times we would get re-balance Kafka consumer group and suddenly we would notice our application consumer stop getting messages . And then before we could run some diagnostics it would re-balance again and our consumer would start getting messages but we would have lost some messages in between .
Read data till Kafka Consumer Committed Position
Making Kafka Consumer only read messages till a specified position .Specially to the point where another consumer stopped reading .
Spring HATEOAS adaptation to existing systems
Lately i was involved in lot of discussion at work whether HATEOAS is a good option for our new REST application which would serve as an interface to multiple back-end services we have been building . I believe there is no need for me explain the concept of HATEOAS here as there are good enough... Continue Reading →
