johnjr

6 ms·

1.
The Reflection on My First Year at Meta (Facebook)(johnjr.dev)
4 points by johnjr 3mo ago|0 comments
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by johnjr 8mo ago
Very nice job!
3.
A New Series on Cracking FAANG-Level Code Challenges(johnjr.dev)
2 points by johnjr 9mo ago|1 comments
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by johnjr 9mo ago
I know the stress of preparing for technical interviews at companies like FAANG. That's why I'm kicking off a new series to demystify the most critical coding interview concepts. First up: Binary Search. It seems simple, but its v
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Builder Design Pattern and Cyclomatic Complexity Reduction(johnjr.dev)
2 points by johnjr 10mo ago|1 comments
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by johnjr 10mo ago
In this post, I will explain in detail how I used the builder design pattern together with the bit mask field technique to reduce complexity. As a result, I decreased the cyclomatic complexity from 24 to 0 and reduced development time from
7.
by johnjr 1y ago
Hi @linguae, The video in the post, originally presented by Barbara Liskov, is a very interesting resource on this topic. Let me know if your students want to discuss this in more detail, and please share their ideas!
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Composition, Inheritance, and Liskov Substitution Principle(joaojunior.org)
3 points by johnjr 1y ago|3 comments
9.
by johnjr 1y ago
In software development, organizing our codebase in a way that is easy to maintain is always a good practice, and this idea is not new. Actually, I think this started in 1968 when the term software crisis was coined. Since then, we have dev
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Improving Legacy Code: Using Task Queue to Speed Up a Crawler in an ETL Process(joaojunior.org)
1 points by johnjr 2y ago|1 comments
11.
by johnjr 2y ago
I described how I improved an ETL process to be more than 4x faster using the same resources. While the old architecture used Python threads, the new one used task queue architecture to be more reliable and scalable. So, I will explain how
12.
by johnjr 2y ago
I just wrote a post about how the Cpython is much faster without GIL: https://news.ycombinator.com/item?id=40988244
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Is CPython Faster Without the Global Interpreter Lock(GIL)?(joaojunior.org)
7 points by johnjr 2y ago|0 comments
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Lua scripts are not atomic in Redis(joaojunior.org)
3 points by johnjr 2y ago|0 comments