Scripts I wrote that I use all the time
https://www.reddit.com/r/programming/comments/1odyyl0/scripts_i_wrote_that_i_use_all_the_time/

submitted by /u/cheerfulboy (https://www.reddit.com/user/cheerfulboy)
[link] (https://evanhahn.com/scripts-i-wrote-that-i-use-all-the-time/) [comments] (https://www.reddit.com/r/programming/comments/1odyyl0/scripts_i_wrote_that_i_use_all_the_time/)

Speed vs. Velocity: The Difference Between Moving Fast and Moving Forward
https://www.reddit.com/r/programming/comments/1oe27p8/speed_vs_velocity_the_difference_between_moving/

submitted by /u/teivah (https://www.reddit.com/user/teivah)
[link] (https://read.thecoder.cafe/p/speed-vs-velocity) [comments] (https://www.reddit.com/r/programming/comments/1oe27p8/speed_vs_velocity_the_difference_between_moving/)

I rewrote a classic poker hand evaluator from scratch in modern C# for .NET 8 - here's how I got 115M evals/sec
https://www.reddit.com/r/programming/comments/1oe3xfh/i_rewrote_a_classic_poker_hand_evaluator_from/

<!-- SC_OFF -->I wanted to see how a decades-old poker hand evaluator algorithm would perform if re-engineered in a modern runtime - so I rebuilt it in C# for .NET 8 and benchmarked it against the classics. Instead of precomputed tables or unsafe code, this version is fully algorithmic, leveraging Span buffers, managed data structures, and .NET 8 JIT optimizations. Performance: ~115 million 7-card evaluations per second
Memory: ~6 KB/op - zero lookup tables
Stack: ASP.NET Core 8 (Razor Pages) + SQL Server + BenchmarkDotNet
Live demo: poker-calculator.johnbelthoff.com (https://poker-calculator.johnbelthoff.com/)
Source: github.com/JBelthoff/poker.net (https://github.com/JBelthoff/poker.net) I wrote a full breakdown of the rewrite, benchmarks, and algorithmic approach here:
LinkedIn Article (https://www.linkedin.com/pulse/why-i-rewrote-classic-poker-evaluator-from-scratch-modern-belthoff-dto0e) Feedback and questions are welcome - especially from others working on .NET performance or algorithmic optimization. <!-- SC_ON --> submitted by /u/CodeAndContemplation (https://www.reddit.com/user/CodeAndContemplation)
[link] (https://github.com/JBelthoff/poker.net) [comments] (https://www.reddit.com/r/programming/comments/1oe3xfh/i_rewrote_a_classic_poker_hand_evaluator_from/)

Summary of the Amazon DynamoDB Service Disruption in Northern Virginia (US-EAST-1) Region
https://www.reddit.com/r/programming/comments/1oe4isv/summary_of_the_amazon_dynamodb_service_disruption/

submitted by /u/MajesticBanana2812 (https://www.reddit.com/user/MajesticBanana2812)
[link] (https://aws.amazon.com/message/101925/) [comments] (https://www.reddit.com/r/programming/comments/1oe4isv/summary_of_the_amazon_dynamodb_service_disruption/)

Accessing Max Verstappen's passport and PII through FIA bugs
https://www.reddit.com/r/programming/comments/1oe84s0/accessing_max_verstappens_passport_and_pii/

submitted by /u/iamkeyur (https://www.reddit.com/user/iamkeyur)
[link] (https://ian.sh/fia) [comments] (https://www.reddit.com/r/programming/comments/1oe84s0/accessing_max_verstappens_passport_and_pii/)

Programming With Less Than Nothing
https://www.reddit.com/r/programming/comments/1oe83od/programming_with_less_than_nothing/

submitted by /u/iamkeyur (https://www.reddit.com/user/iamkeyur)
[link] (https://joshmoody.org/blog/programming-with-less-than-nothing/) [comments] (https://www.reddit.com/r/programming/comments/1oe83od/programming_with_less_than_nothing/)

Developers Spend Just 1% of Coding Time Using VS Code's Debugger (11,805 Sessions Analyzed)
https://www.reddit.com/r/programming/comments/1oe8tc5/developers_spend_just_1_of_coding_time_using_vs/

submitted by /u/Equivalent-Yak2407 (https://www.reddit.com/user/Equivalent-Yak2407)
[link] (https://floustate.com/blog/developers-spend-1-percent-time-vscode-debugger) [comments] (https://www.reddit.com/r/programming/comments/1oe8tc5/developers_spend_just_1_of_coding_time_using_vs/)

Summary of the Amazon DynamoDB Service Disruption in Northern Virginia (US-EAST-1) Region
https://www.reddit.com/r/programming/comments/1oeacez/summary_of_the_amazon_dynamodb_service_disruption/

submitted by /u/Total_Birthday5242 (https://www.reddit.com/user/Total_Birthday5242)
[link] (https://aws.amazon.com/message/101925/) [comments] (https://www.reddit.com/r/programming/comments/1oeacez/summary_of_the_amazon_dynamodb_service_disruption/)

PyTorch Monarch is a distributed programming framework that brings the simplicity of single-machine PyTorch to entire clusters
https://www.reddit.com/r/programming/comments/1oedce7/pytorch_monarch_is_a_distributed_programming/

submitted by /u/ketralnis (https://www.reddit.com/user/ketralnis)
[link] (https://pytorch.org/blog/introducing-pytorch-monarch/) [comments] (https://www.reddit.com/r/programming/comments/1oedce7/pytorch_monarch_is_a_distributed_programming/)

Kaitai Struct: declarative binary format parsing language
https://www.reddit.com/r/programming/comments/1oedcyl/kaitai_struct_declarative_binary_format_parsing/

submitted by /u/ketralnis (https://www.reddit.com/user/ketralnis)
[link] (https://kaitai.io/) [comments] (https://www.reddit.com/r/programming/comments/1oedcyl/kaitai_struct_declarative_binary_format_parsing/)

Bitmasks, Ruby Threads and Interrupts, oh my
https://www.reddit.com/r/programming/comments/1oedfay/bitmasks_ruby_threads_and_interrupts_oh_my/

submitted by /u/ketralnis (https://www.reddit.com/user/ketralnis)
[link] (https://jpcamara.com/2025/10/22/bitmasks-threads-and-interrupts-concurrent.html) [comments] (https://www.reddit.com/r/programming/comments/1oedfay/bitmasks_ruby_threads_and_interrupts_oh_my/)

Serverless is an Architectural Handicap
https://www.reddit.com/r/programming/comments/1oeds7s/serverless_is_an_architectural_handicap/

submitted by /u/avin_2020 (https://www.reddit.com/user/avin_2020)
[link] (https://viduli.io/blog/serverless-is-a-handicap) [comments] (https://www.reddit.com/r/programming/comments/1oeds7s/serverless_is_an_architectural_handicap/)

Length-extension attacks are still a thing
https://www.reddit.com/r/programming/comments/1oediqg/lengthextension_attacks_are_still_a_thing/

submitted by /u/ketralnis (https://www.reddit.com/user/ketralnis)
[link] (https://00f.net/2025/10/23/length-extension-attacks/) [comments] (https://www.reddit.com/r/programming/comments/1oediqg/lengthextension_attacks_are_still_a_thing/)

The Hidden Complexity of Distributed Rate Limiting: Lessons from Building 5 Algorithms
https://www.reddit.com/r/programming/comments/1oeel94/the_hidden_complexity_of_distributed_rate/

submitted by /u/uppnrise (https://www.reddit.com/user/uppnrise)
[link] (https://bnacar.dev/2025/10/23/hidden-complexity-of-rate-limiting.html) [comments] (https://www.reddit.com/r/programming/comments/1oeel94/the_hidden_complexity_of_distributed_rate/)

WebFragments: A new approach to micro-frontends (from the co-creator of Angular and Microsoft’s DX lead)
https://www.reddit.com/r/programming/comments/1oeryvj/webfragments_a_new_approach_to_microfrontends/

<!-- SC_OFF -->Hey folks 👋 Just released a new Señors @ Scale episode that I think will interest anyone working on large frontend platforms or micro-frontends. I sat down with Igor Minar (co-creator of Angular, now at Cloudflare) and Natalia Venditto (Principal PM for JavaScript Developer Experience at Microsoft) to talk about WebFragments — a new way to build modular frontends that actually scale. The idea:
→ Each micro-frontend runs in its own isolated JavaScript context (like Docker for the browser)
→ The DOM is virtualized using Shadow DOM, not iframes
→ Fragments stay independent but render as one seamless app
→ It’s framework-agnostic — React, Vue, Qwik, Angular… all work They also shared how Cloudflare is already migrating its production dashboard using WebFragments — incrementally, without breaking the existing platform. <!-- SC_ON --> submitted by /u/creasta29 (https://www.reddit.com/user/creasta29)
[link] (https://www.youtube.com/watch?v=JY2Yjy2020I&list=PLeeGnEj5psFIwWJfpCwnedMsFApK6CvRr) [comments] (https://www.reddit.com/r/programming/comments/1oeryvj/webfragments_a_new_approach_to_microfrontends/)

Stacked Diffs - Simply Explained
https://www.reddit.com/r/programming/comments/1oeu74t/stacked_diffs_simply_explained/

submitted by /u/sdxyz42 (https://www.reddit.com/user/sdxyz42)
[link] (https://newsletter.systemdesign.one/p/stacked-diffs) [comments] (https://www.reddit.com/r/programming/comments/1oeu74t/stacked_diffs_simply_explained/)

F-Droid and Google's Developer Registration Decree
https://www.reddit.com/r/programming/comments/1oev552/fdroid_and_googles_developer_registration_decree/

submitted by /u/alexeyr (https://www.reddit.com/user/alexeyr)
[link] (https://f-droid.org/2025/09/29/google-developer-registration-decree.html) [comments] (https://www.reddit.com/r/programming/comments/1oev552/fdroid_and_googles_developer_registration_decree/)

The mystery of the phantom quote in my CI builds
https://www.reddit.com/r/programming/comments/1oew0ul/the_mystery_of_the_phantom_quote_in_my_ci_builds/

submitted by /u/_shadowbannedagain (https://www.reddit.com/user/_shadowbannedagain)
[link] (https://questdb.com/blog/azure-pipelines-stdout-stderr-race-condition/) [comments] (https://www.reddit.com/r/programming/comments/1oew0ul/the_mystery_of_the_phantom_quote_in_my_ci_builds/)

A closer look at the details behind the Go port of the TypeScript compiler
https://www.reddit.com/r/programming/comments/1oewzuo/a_closer_look_at_the_details_behind_the_go_port/

submitted by /u/mariuz (https://www.reddit.com/user/mariuz)
[link] (https://2ality.com/2025/03/typescript-in-go.html) [comments] (https://www.reddit.com/r/programming/comments/1oewzuo/a_closer_look_at_the_details_behind_the_go_port/)

Ken Thompson's "Trusting Trust" compiler backdoor - Now with the actual source code (2023)
https://www.reddit.com/r/programming/comments/1of2toi/ken_thompsons_trusting_trust_compiler_backdoor/

<!-- SC_OFF -->Ken Thompson's 1984 "Reflections on Trusting Trust" is a foundational paper in supply chain security, demonstrating that trusting source code alone isn't enough - you must trust the entire toolchain. The attack works in three stages: Self-reproduction: Create a program that outputs its own source code (a quine) Compiler learning: Use the compiler's self-compilation to teach it knowledge that persists only in the binary Trojan horse deployment: Inject backdoors that: Insert a password backdoor when compiling login.c Re-inject themselves when compiling the compiler Leave no trace in source code after "training" In 2023, Thompson finally released the actual code (file: nih.a) after Russ Cox asked for it. I wrote a detailed walkthrough with the real implementation annotated line-by-line. Why this matters for modern security: Highlights the limits of source code auditing Foundation for reproducible builds initiatives (Debian, etc.) Relevant to current supply chain attacks (SolarWinds, XZ Utils) Shows why diverse double-compiling (DDC) is necessary The backdoor password was "codenih" (NIH = "not invented here"). Thompson confirmed it was built as a proof-of-concept but never deployed in production. <!-- SC_ON --> submitted by /u/fizzner (https://www.reddit.com/user/fizzner)
[link] (https://micahkepe.com/blog/thompson-trojan-horse/) [comments] (https://www.reddit.com/r/programming/comments/1of2toi/ken_thompsons_trusting_trust_compiler_backdoor/)