The Java Executor Framework: Overview of Java Thread Pools - YouTube
Key metrics for Elasticsearch performance monitoring - ManageEngine Blog
ThreadPool: Add a blocking thread pool · Issue #74 · elastic/elasticsearch · GitHub
Concurrency in Spring WebFlux | Baeldung
threadpool - why elasticsearch reject almost all queries when thread pool and queue is full instead of answering as much as possible and rejecting the remaining? - Stack Overflow
Elasticsearch Integration | VMware Aria Operations for Applications Documentation