quartz | Quartz scheduler library | Job Scheduling library

Story: in my java code i have a few ScheduledFuture's that i need to run everyday on specific time (15:00 for example), the only available thing that i have is database, my current application and openshift with multiple pods. I can't move this code out of my application and must run it from there.

Problem: ScheduledFuture works on every pod, but i need to run it only once a day. I have a few ideas, but i don't know how to implement them.

Idea #1: Set environment variable to specific pod, then i will be able to check if this variable exists (and its value), read it and run schedule task if required. I know that i have a risk of hovered pods, but that's better not to run scheduled task at all than to run it multiple times.

Idea #2: Determine a leader pod somehow, this seems to be a bad idea in my case since it always have "split-brain" problem.

Idea #3 (a bit offtopic): Create my own synchronization algorithm thru database. To be fair, it's the simplest way to me since i'm a programmer and not SRE. I understand that this is not the best one tho.

Idea #4 (a bit offtopic): Just use quartz schedule library. I personally don't really like that and would prefer one of the first two ideas (if i will able to implement them), but at the moment it seems like my only valid choice.

UPD. May be you have some other suggestions or a warning that i shouldn't ever do that?

I currently have a @Scheduled method in my Spring Boot app

I am working with Grails 3.3.11 and Java 1.8.0_275 (open).

All of a sudden my project stopped working. When I run grails clean, or run-app it says:

I have a spring boot web app with the quartz dependencies, and spring actuator running. But actuator only publishes 14 endpoints. Is there something I need to enable to get actuator to publish the quartz endpoint?

The parent project is

My apologies for being back so soon. I've tried many ways, but I can't compile the code because everything I've tried tells me I can't do that with a boolean field. Every example I've searched gives examples for ? x == 1. But I'm trying to filter for a field that has a boolean value ? x == true.

I've tried filtering in the foreach loop, changing to a for loop, adding a condition to the where also to the join and a RemoveAll. I can't find/think of any other ways to try. Inexperience is killing me.

I need to filter catObj.["IncludeCategory"] == true.

Any help is appreciated.

I want to join two json files using a common key and get all the records from the right file and matching data from the left.

If it was SQL.

First of all I have read a lot of posts about this problem on internet as well as on stackoverflow when nothing worked out I decided to ask myself.

I am trying to create a simple exe of my spring boot application using Launch4j maven plugin. The generated exe is unable to find the main class. I get the below error on my command line:

I'm new to python and trying to get a list of the most popular trigrams for each row in a Pandas dataframe from a column named ['Question'].

I've come close to what I need, but I am unable to get the popularity counts at a row level. Ideally I'd just like to keep the ngrams with a minimum frequency about 1.

Minimum Reproduceable Example:

How to handle Quartz configuration for an API which is created in ASP.NET Core and hosted in Azure App Service which is scaled out to more than one instances?

The API currently is always hosted in a single IIS application thus Quartz configuration looks like follow, no cluster configuration used