Why is Vert.x worker verticle called from multiple threads concurrently?

my vertx (4.0.2) application written in Java (11) uses some data-heavy verticles that cause latency spikes because the eventloop gets blocked by them for a moment. For this reason i wanted to deploy …

Java common JDBC SQL Query strategy for Unit Test using HSQLDB and runtime using MySQL

I am developing Java Vert.x 3 application. I use HSQLDB for testing with in-memory DB and MySQL 8.0.20 for runtime. When the vertx verticle is deployed, it initializes the db and tables. Since this is …

Tomcat vs Vert.x

For the past few days I have been reading Vert.x documents. I know that Vert.x is polyglot, single threaded, non-blocking IO, modular architecture, high scalability. Is there any other major …