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back-end

5 posts
Setup Jenkins worker node that support building Docker Image.
devops
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Setup Jenkins worker node that support building Docker Image.

Usually when we setup a Jenkins server, we usually use the master to build jobs. The master node is in charge of scheduling jobs, assigning slave nodes, and sending builds to slave nodes for execution
COPPER Nguyen
Set up and work with MySQL on Windows with XAMPP
WEB
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Set up and work with MySQL on Windows with XAMPP

I. What is XAMPP ?XAMPP is an open-sourced server setup to test the projects on a local machine before making it available to everyone over the web. This web app development server comes pre-installed
Eddy
Redis Pub/Sub and Redis Stream
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Redis Pub/Sub and Redis Stream

Is Redis Stream better than Redis Pub/Sub for my chat service?That was a question for me when I first read about Redis Stream - a new data type introduced with Redis 5.0. So, I will go into a lot of
Drew
ActiveRecord performance: N+1 queries
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ActiveRecord performance: N+1 queries

Reference: https://guides.rubyonrails.org/active_record_querying.html#eager-loading-associations What is N+1 query? The N+1 query problem is one of the common performance antipatterns in ORMs. It ha
Bond
Rails: "find_in_batches" vs."in_batches" in depth comparison
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Rails: "find_in_batches" vs."in_batches" in depth comparison

Rails, just like many other frameworks, has a lot of magic (and surprises too). Last month, when I had a chance to do a performance tuning for the ActiveRecord #find_in_batches and #find_batch I found
Tran Khanh