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Understanding LRU Caches

https://learnwithtimi.substack.com/p/understanding-least-recently-used
2•giddy_dev•1h ago

Comments

giddy_dev•1h ago
I wrote about a type of cache that is commonly used in production systems today: Least-Recently-Used Cache. Its implementation is a popular technical question interviewers like to ask.

In the post, I talk about how it works using visual analogies and also the data structures that make up an LRU Cache.

In Part 2 of this series, I'll be implementing an LRU Cache in Golang, so if that's something you'll be interested in learning, subscribe to my Substack so you get it in your mail!

Social media 'addiction' is overrated

https://www.washingtonpost.com/opinions/2026/03/08/instagram-meta-youtube-lawsuit-addiction/
1•paulpauper•1m ago•0 comments

The Rise of Popcorn at the Movies

https://www.wsj.com/arts-culture/food-cooking/movie-theater-popcorn-history-great-depression-6e5a...
1•paulpauper•1m ago•0 comments

Palestinian boy, 12, describes how Israeli forces killed his family in car

https://www.bbc.com/news/articles/c70n2x7p22do
1•tartoran•1m ago•0 comments

A Better Pattern Than MCP for Agent-Friendly CLIs

https://coasts.dev/blog/a-better-pattern-than-mcp-for-agent-friendly-clis
1•jsunderland323•1m ago•0 comments

Building a fractions tutor led us to an architecture for controlling AI

https://github.com/emergent-state-machine/esm-spec/tree/main
1•ih8scargo•5m ago•1 comments

Once: Run multi Dockerized web apps on single server

https://github.com/basecamp/once
1•TobiasBerg•7m ago•1 comments

Refactor: When It Changes Things

https://howtocenterdiv.com/beyond-the-div/refactor-when-it-actually-changes-things
1•imkyssa•7m ago•0 comments

The Japanese snowball fight game vying to be an Olympic sport

https://www.japantimes.co.jp/sports/2026/02/22/more-sports/yukigassen-olympic-dreams/
1•PaulHoule•8m ago•0 comments

A bare-metal 3D engine in Go with custom software/OpenGL rasterizers

https://github.com/markel1974/godoom
1•markel1974•8m ago•1 comments

Bing have functional customer support

https://www.bing.com/search?q=dollardeploy
1•huksley•9m ago•1 comments

Perfectly Imperfect, a social network like the internet of yore

https://english.elpais.com/society/2026-03-15/perfectly-imperfect-the-social-network-that-returns...
1•dxs•10m ago•0 comments

The Conditionally Open Web

https://www.coryd.dev/posts/2026/the-conditionally-open-web
1•cdrnsf•11m ago•0 comments

How to read books again, backed by neuroscience

https://www.fastcompany.com/91502134/cant-read-books-anymore-neuroscience-has-a-5-step-plan-to-ge...
1•speckx•11m ago•0 comments

Git for Beginners: Branches, Commits, and Your First Pull Request

https://jsdev.space/git-branches-commits-pull-request/
1•javatuts•11m ago•0 comments

Show HN: AwardClaw – 24/7 award travel research agent

https://www.awardclaw.com/
1•veritas9•12m ago•0 comments

Mistral.ai Leanstral: open-source model designed for engineering

https://docs.mistral.ai/models/leanstral-26-03
1•james2doyle•13m ago•2 comments

Agent Kitchen

https://github.com/vivekhaldar/agent-kitchen
1•gandalfgeek•15m ago•0 comments

1968: What Will Technology Bring? – Towards Tomorrow – BBC Archive [video]

https://www.youtube.com/watch?v=c-i4sDAGyXQ
1•highspeedbus•15m ago•0 comments

Computational Foundations for the Second Law of Thermodynamics–Stephen Wolfram

https://writings.stephenwolfram.com/2023/02/computational-foundations-for-the-second-law-of-therm...
1•bilsbie•17m ago•0 comments

IBM RPG

https://en.wikipedia.org/wiki/IBM_RPG
1•tosh•19m ago•0 comments

Tom Scott: England – Official Teaser

https://nebula.tv/videos/tomscott-england-teaser
1•toomuchtodo•21m ago•1 comments

Police Investigate German Historian for Hitler-Putin Meme

https://reason.com/2026/03/13/police-investigate-german-historian-for-hitler-putin-meme/
3•whatisabcdefgh•22m ago•0 comments

My Random Forest Was Mostly Learning Time-to-Expiry Noise

https://illya.sh/threads/out-of-sample-permutation-feature-importance-for-random
1•iluxonchik•23m ago•0 comments

Show HN: US-Based PCB Fabrication for $0.75in

https://www.pikkoloassembly.com/panel-pricing
2•pikkoloassembly•25m ago•0 comments

The return-to-the-office trend backfires

https://thehill.com/opinion/technology/5775420-remote-first-productivity-growth/
22•penguin_booze•26m ago•3 comments

Jemalloc un-abandoned by Meta

https://engineering.fb.com/2026/03/02/data-infrastructure/investing-in-infrastructure-metas-renew...
45•hahahacorn•27m ago•4 comments

China just approved world first commercial brain implant

https://www.scientificamerican.com/article/china-just-approved-its-first-brain-implant-for-commer...
5•nothrowaways•28m ago•0 comments

Stop Killing Games

https://en.wikipedia.org/wiki/Stop_Killing_Games
1•cainxinth•28m ago•0 comments

Nono-Gate: Deterministic Offline-Verifiable Security Decisions for CI

https://github.com/88nonog-dev/nono-gate
1•devsec_moh•30m ago•1 comments

Clockwise acquired by Salesforce, shutting down March 27, 2026

https://www.getclockwise.com
2•ajsharma•31m ago•0 comments