[jdt-ls-dev] How Does the single LSP Service efficiently and exactly sup

[Kim <jinhangzhan@xxxxxxx>]

Hello, I am a java programer who is employed in a tiny firm and have several questions about the eclipse.jdt.ls project.

eclipse.jdt.ls version: 1.6.0.20211126152438, java version "11.0.10" 2021-01-19 LTS

At first, I use the JLS for users to support their own workspace and start a new process(JLS instance) for every user when they enter the code edit page.

I find that the service is very slow during initialization, including initialize, publishDiagnostics method etc. Then I change the relation of workspace and JLS instance from one-to-one to many-to-one mode and pre-init the all projects when my app start. However, the JLS service is not as effective as I expect, there exist many problems as follows:

1、When the workspace have same projects with different URI such as /workspace/kim/project1 and /workspace/jack/project1, user open the same java file in both URI at same time, the completion method return the full compute result include both java file of the project itself and jar file to one user, and another only return the latter one.

the exact one:

the inexact one:

the workspace of one user

the workspace of another user

2、The response time is very long even suspending the request when the different users use the JLS Service at the same time on the website for a while.

the response time(ms):

To sum up, I wonder whether the single JLS service instance can support the multi-workspace folders includes same projects? if so, what do I have to do to improve the performance of service?