Skip to content

Instantly share code, notes, and snippets.

@Franalvarezfx
Franalvarezfx / curso-java.md
Created March 13, 2025 03:46 — forked from sergiecode/curso-java.md
Instalaciones Necesarias y recomendadas para el curso de JAVA
@Franalvarezfx
Franalvarezfx / clean_code.md
Created December 11, 2021 03:15 — forked from wojteklu/clean_code.md
Summary of 'Clean code' by Robert C. Martin

Code is clean if it can be understood easily – by everyone on the team. Clean code can be read and enhanced by a developer other than its original author. With understandability comes readability, changeability, extensibility and maintainability.


General rules

  1. Follow standard conventions.
  2. Keep it simple stupid. Simpler is always better. Reduce complexity as much as possible.
  3. Boy scout rule. Leave the campground cleaner than you found it.
  4. Always find root cause. Always look for the root cause of a problem.

Design rules

@Franalvarezfx
Franalvarezfx / latency.txt
Created November 16, 2021 00:58 — forked from jboner/latency.txt
Latency Numbers Every Programmer Should Know
Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference 0.5 ns
Branch mispredict 5 ns
L2 cache reference 7 ns 14x L1 cache
Mutex lock/unlock 25 ns
Main memory reference 100 ns 20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy 3,000 ns 3 us
Send 1K bytes over 1 Gbps network 10,000 ns 10 us
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD