THE UNKNOWN
Essays, notes, and practical guides for making sense of the world.
Mastering Algorithms and Data Structures for Efficient Programming
In the realm of programming, algorithms and data structures serve as the backbone of efficient software development. Understanding how to use them effectively...
mysql tips for optimizing queries
MySQL is one of the most popular relational database management systems, but without proper optimization, even the best designs can lead to performance issues....
Use EXPLAIN ANALYZE Without Surprises
Read a real PostgreSQL query plan while limiting runtime risk and remembering that ANALYZE executes the statement.
Understanding MySQL Indexes for Optimized Performance
In the realm of database management, performance is a critical factor that can significantly impact the efficiency of applications. One of the fundamental...
DevOps Tutorial for Beginners
DevOps is a set of practices that combines software development (Dev) and IT operations (Ops), aiming to shorten the development lifecycle and deliver...
The Hotel Key That Opened Nothing
A hotel key fails at every door except the one place nobody intended to visit.
Nginx Location Matching in the Order That Matters
Understand exact, prefix, and regular-expression locations before adding another Nginx block.
Redis Persistence: A Deep Dive into RDB and AOF Mechanisms
Redis, an acronym for Remote Dictionary Server, epitomizes a robust, open-source, in-memory data structure store known for its high performance and...
Disabling IPv6 on Debian, Ubuntu, and CentOS: A Comprehensive Guide
IPv6 is increasingly being adopted worldwide, but there are situations where disabling IPv6 might be necessary, such as compatibility issues, specific network...
Git Reflog After the Wrong Reset
Recover a local commit after an accidental reset by inspecting the reflog before moving another reference.
The Rain Started After I Ordered Ice Cream
A sudden storm, a melting cup of ice cream, and five strangers trying to occupy the same narrow awning.
The Cat Who Attended the Video Meeting
A cat joins a video meeting, gains decision-making authority, and leaves before anyone can assign follow-up work.