How Fast Can You Parse a File with 1 Billion Rows of Weather Data Using Java? • Roy van Rijn
https://www.reddit.com/r/programming/comments/1nj6z9d/how_fast_can_you_parse_a_file_with_1_billion_rows/
submitted by /u/goto-con (https://www.reddit.com/user/goto-con)
[link] (https://youtu.be/EFXxXFHpS0M) [comments] (https://www.reddit.com/r/programming/comments/1nj6z9d/how_fast_can_you_parse_a_file_with_1_billion_rows/)
https://www.reddit.com/r/programming/comments/1nj6z9d/how_fast_can_you_parse_a_file_with_1_billion_rows/
submitted by /u/goto-con (https://www.reddit.com/user/goto-con)
[link] (https://youtu.be/EFXxXFHpS0M) [comments] (https://www.reddit.com/r/programming/comments/1nj6z9d/how_fast_can_you_parse_a_file_with_1_billion_rows/)
Senior DevOps Engineer Interview at Uber..
https://www.reddit.com/r/programming/comments/1nj9urv/senior_devops_engineer_interview_at_uber/
submitted by /u/ajit_45288 (https://www.reddit.com/user/ajit_45288)
[link] (https://medium.com/mind-meets-machine/senior-devops-engineer-interview-at-uber-9a7237b3cc34?sk=09327ee4743c924974ce2000eb0909c9) [comments] (https://www.reddit.com/r/programming/comments/1nj9urv/senior_devops_engineer_interview_at_uber/)
https://www.reddit.com/r/programming/comments/1nj9urv/senior_devops_engineer_interview_at_uber/
submitted by /u/ajit_45288 (https://www.reddit.com/user/ajit_45288)
[link] (https://medium.com/mind-meets-machine/senior-devops-engineer-interview-at-uber-9a7237b3cc34?sk=09327ee4743c924974ce2000eb0909c9) [comments] (https://www.reddit.com/r/programming/comments/1nj9urv/senior_devops_engineer_interview_at_uber/)
The Ultimate SRE Reliability Checklist
https://www.reddit.com/r/programming/comments/1njbhx3/the_ultimate_sre_reliability_checklist/
submitted by /u/OuPeaNut (https://www.reddit.com/user/OuPeaNut)
[link] (https://oneuptime.com/blog/post/2025-09-10-sre-checklist/view) [comments] (https://www.reddit.com/r/programming/comments/1njbhx3/the_ultimate_sre_reliability_checklist/)
https://www.reddit.com/r/programming/comments/1njbhx3/the_ultimate_sre_reliability_checklist/
submitted by /u/OuPeaNut (https://www.reddit.com/user/OuPeaNut)
[link] (https://oneuptime.com/blog/post/2025-09-10-sre-checklist/view) [comments] (https://www.reddit.com/r/programming/comments/1njbhx3/the_ultimate_sre_reliability_checklist/)
Omittable — Solving the Ambiguity of Null
https://www.reddit.com/r/programming/comments/1njbvjp/omittable_solving_the_ambiguity_of_null/
submitted by /u/TheMrMilchmann (https://www.reddit.com/user/TheMrMilchmann)
[link] (https://committing-crimes.com/articles/2025-09-16-null-and-absence) [comments] (https://www.reddit.com/r/programming/comments/1njbvjp/omittable_solving_the_ambiguity_of_null/)
https://www.reddit.com/r/programming/comments/1njbvjp/omittable_solving_the_ambiguity_of_null/
submitted by /u/TheMrMilchmann (https://www.reddit.com/user/TheMrMilchmann)
[link] (https://committing-crimes.com/articles/2025-09-16-null-and-absence) [comments] (https://www.reddit.com/r/programming/comments/1njbvjp/omittable_solving_the_ambiguity_of_null/)
Software Performance: Avoiding Slow Code, Myths & Sane Approaches – Casey Muratori | The Marco Show
https://www.reddit.com/r/programming/comments/1nje6fk/software_performance_avoiding_slow_code_myths/
submitted by /u/marbehl (https://www.reddit.com/user/marbehl)
[link] (https://www.youtube.com/watch?v=apREl0KmTdQ) [comments] (https://www.reddit.com/r/programming/comments/1nje6fk/software_performance_avoiding_slow_code_myths/)
https://www.reddit.com/r/programming/comments/1nje6fk/software_performance_avoiding_slow_code_myths/
submitted by /u/marbehl (https://www.reddit.com/user/marbehl)
[link] (https://www.youtube.com/watch?v=apREl0KmTdQ) [comments] (https://www.reddit.com/r/programming/comments/1nje6fk/software_performance_avoiding_slow_code_myths/)
UUIDv47: keep v7 in your DB, emit v4 outside (SipHash-masked timestamp)
https://www.reddit.com/r/programming/comments/1njebn0/uuidv47_keep_v7_in_your_db_emit_v4_outside/
<!-- SC_OFF -->Hi, I’m the author of uuidv47. The idea is simple: keep UUIDv7 internally for database indexing and sortability, but emit UUIDv4-looking façades externally so clients don’t see timing patterns. How it works: the 48-bit timestamp is XOR-masked with a keyed SipHash-2-4 stream derived from the UUID’s random field. The random bits are preserved, the version flips between 7 (inside) and 4 (outside), and the RFC variant is kept. The mapping is injective: (ts, rand) → (encTS, rand). Decode is just encTS ⊕ mask, so round-trip is exact. Security: SipHash is a PRF, so observing façades doesn’t leak the key. Wrong key = wrong timestamp. Rotation can be done with a key-ID outside the UUID. Performance: one SipHash over 10 bytes + a couple of 48-bit loads/stores. Nanosecond overhead, header-only C89, no deps, allocation-free. Tests: SipHash reference vectors, round-trip encode/decode, and version/variant invariants. Curious to hear feedback! EDIT: Precision, In the database, we keep the ID as UUIDv7. When it goes outside, it’s converted into a masked UUIDv4. One global key is all that’s needed there’s no risk of leaks and the performance impact is effectively zero. <!-- SC_ON --> submitted by /u/aabbdev (https://www.reddit.com/user/aabbdev)
[link] (https://github.com/stateless-me/uuidv47) [comments] (https://www.reddit.com/r/programming/comments/1njebn0/uuidv47_keep_v7_in_your_db_emit_v4_outside/)
https://www.reddit.com/r/programming/comments/1njebn0/uuidv47_keep_v7_in_your_db_emit_v4_outside/
<!-- SC_OFF -->Hi, I’m the author of uuidv47. The idea is simple: keep UUIDv7 internally for database indexing and sortability, but emit UUIDv4-looking façades externally so clients don’t see timing patterns. How it works: the 48-bit timestamp is XOR-masked with a keyed SipHash-2-4 stream derived from the UUID’s random field. The random bits are preserved, the version flips between 7 (inside) and 4 (outside), and the RFC variant is kept. The mapping is injective: (ts, rand) → (encTS, rand). Decode is just encTS ⊕ mask, so round-trip is exact. Security: SipHash is a PRF, so observing façades doesn’t leak the key. Wrong key = wrong timestamp. Rotation can be done with a key-ID outside the UUID. Performance: one SipHash over 10 bytes + a couple of 48-bit loads/stores. Nanosecond overhead, header-only C89, no deps, allocation-free. Tests: SipHash reference vectors, round-trip encode/decode, and version/variant invariants. Curious to hear feedback! EDIT: Precision, In the database, we keep the ID as UUIDv7. When it goes outside, it’s converted into a masked UUIDv4. One global key is all that’s needed there’s no risk of leaks and the performance impact is effectively zero. <!-- SC_ON --> submitted by /u/aabbdev (https://www.reddit.com/user/aabbdev)
[link] (https://github.com/stateless-me/uuidv47) [comments] (https://www.reddit.com/r/programming/comments/1njebn0/uuidv47_keep_v7_in_your_db_emit_v4_outside/)
Fast Fourier Transforms Part 1: Cooley-Tukey
https://www.reddit.com/r/programming/comments/1njfhd8/fast_fourier_transforms_part_1_cooleytukey/
submitted by /u/Revolutionary-Ad-65 (https://www.reddit.com/user/Revolutionary-Ad-65)
[link] (https://connorboyle.io/2025/09/11/fft-cooley-tukey.html) [comments] (https://www.reddit.com/r/programming/comments/1njfhd8/fast_fourier_transforms_part_1_cooleytukey/)
https://www.reddit.com/r/programming/comments/1njfhd8/fast_fourier_transforms_part_1_cooleytukey/
submitted by /u/Revolutionary-Ad-65 (https://www.reddit.com/user/Revolutionary-Ad-65)
[link] (https://connorboyle.io/2025/09/11/fft-cooley-tukey.html) [comments] (https://www.reddit.com/r/programming/comments/1njfhd8/fast_fourier_transforms_part_1_cooleytukey/)
Idempotency in System Design: Full example
https://www.reddit.com/r/programming/comments/1njgic2/idempotency_in_system_design_full_example/
submitted by /u/trolleid (https://www.reddit.com/user/trolleid)
[link] (https://lukasniessen.medium.com/idempotency-in-system-design-full-example-80e9027e7bea) [comments] (https://www.reddit.com/r/programming/comments/1njgic2/idempotency_in_system_design_full_example/)
https://www.reddit.com/r/programming/comments/1njgic2/idempotency_in_system_design_full_example/
submitted by /u/trolleid (https://www.reddit.com/user/trolleid)
[link] (https://lukasniessen.medium.com/idempotency-in-system-design-full-example-80e9027e7bea) [comments] (https://www.reddit.com/r/programming/comments/1njgic2/idempotency_in_system_design_full_example/)
I uncovered an ACPI bug in my Dell Inspiron 5567. It was plaguing me for 8 years.
https://www.reddit.com/r/programming/comments/1njzx0o/i_uncovered_an_acpi_bug_in_my_dell_inspiron_5567/
submitted by /u/lonelyroom-eklaghor (https://www.reddit.com/user/lonelyroom-eklaghor)
[link] (https://triangulatedexistence.mataroa.blog/blog/i-uncovered-an-acpi-bug-in-my-dell-inspiron-5667-it-was-plaguing-me-for-8-years/) [comments] (https://www.reddit.com/r/programming/comments/1njzx0o/i_uncovered_an_acpi_bug_in_my_dell_inspiron_5567/)
https://www.reddit.com/r/programming/comments/1njzx0o/i_uncovered_an_acpi_bug_in_my_dell_inspiron_5567/
submitted by /u/lonelyroom-eklaghor (https://www.reddit.com/user/lonelyroom-eklaghor)
[link] (https://triangulatedexistence.mataroa.blog/blog/i-uncovered-an-acpi-bug-in-my-dell-inspiron-5667-it-was-plaguing-me-for-8-years/) [comments] (https://www.reddit.com/r/programming/comments/1njzx0o/i_uncovered_an_acpi_bug_in_my_dell_inspiron_5567/)
Read free..“Microsoft Interview Experience Compensation : 45LPA Role: SDE 2 (Backend) 📩 Application Process…“
https://www.reddit.com/r/programming/comments/1nk0efk/read_freemicrosoft_interview_experience/
<!-- SC_OFF -->Read free“Microsoft Interview Experience Compensation : 45LPA Role: SDE 2 (Backend) 📩 Application Process…“ by 🥷Byte Ninja on Medium: <!-- SC_ON --> submitted by /u/ajit_45288 (https://www.reddit.com/user/ajit_45288)
[link] (https://medium.com/@ajit34555/microsoft-interview-experience-compensation-45lpa-role-sde-2-backend-application-process-e077d95fd9f7) [comments] (https://www.reddit.com/r/programming/comments/1nk0efk/read_freemicrosoft_interview_experience/)
https://www.reddit.com/r/programming/comments/1nk0efk/read_freemicrosoft_interview_experience/
<!-- SC_OFF -->Read free“Microsoft Interview Experience Compensation : 45LPA Role: SDE 2 (Backend) 📩 Application Process…“ by 🥷Byte Ninja on Medium: <!-- SC_ON --> submitted by /u/ajit_45288 (https://www.reddit.com/user/ajit_45288)
[link] (https://medium.com/@ajit34555/microsoft-interview-experience-compensation-45lpa-role-sde-2-backend-application-process-e077d95fd9f7) [comments] (https://www.reddit.com/r/programming/comments/1nk0efk/read_freemicrosoft_interview_experience/)
Hands-on Demo of Glamorous Toolkit & Moldable Development • Tudor Girba & Kris Jenkins • GOTO 2024
https://www.reddit.com/r/programming/comments/1nk0u06/handson_demo_of_glamorous_toolkit_moldable/
submitted by /u/goto-con (https://www.reddit.com/user/goto-con)
[link] (https://youtu.be/5PaJsEbBARo) [comments] (https://www.reddit.com/r/programming/comments/1nk0u06/handson_demo_of_glamorous_toolkit_moldable/)
https://www.reddit.com/r/programming/comments/1nk0u06/handson_demo_of_glamorous_toolkit_moldable/
submitted by /u/goto-con (https://www.reddit.com/user/goto-con)
[link] (https://youtu.be/5PaJsEbBARo) [comments] (https://www.reddit.com/r/programming/comments/1nk0u06/handson_demo_of_glamorous_toolkit_moldable/)
Backend Web Developers at 39% AI Exposure
https://www.reddit.com/r/programming/comments/1nk12yk/backend_web_developers_at_39_ai_exposure/
<!-- SC_OFF -->Saw this breakdown that puts backend web devs at 39% exposure to AI. That number doesn’t sound too crazy, but some of the task scores they list feel pretty off. <!-- SC_ON --> submitted by /u/Genospect (https://www.reddit.com/user/Genospect)
[link] (https://ismyjobsafe.ai/jobs/web-developers) [comments] (https://www.reddit.com/r/programming/comments/1nk12yk/backend_web_developers_at_39_ai_exposure/)
https://www.reddit.com/r/programming/comments/1nk12yk/backend_web_developers_at_39_ai_exposure/
<!-- SC_OFF -->Saw this breakdown that puts backend web devs at 39% exposure to AI. That number doesn’t sound too crazy, but some of the task scores they list feel pretty off. <!-- SC_ON --> submitted by /u/Genospect (https://www.reddit.com/user/Genospect)
[link] (https://ismyjobsafe.ai/jobs/web-developers) [comments] (https://www.reddit.com/r/programming/comments/1nk12yk/backend_web_developers_at_39_ai_exposure/)
I built a community-driven list of free & open APIs with examples – looking for contributors!
https://www.reddit.com/r/programming/comments/1nk19zl/i_built_a_communitydriven_list_of_free_open_apis/
<!-- SC_OFF -->Hey everyone, I just launched a new open-source project on GitHub: Awesome Open Data APIs 🚀 The goal is simple:
👉 Create a community-driven collection of free & open APIs, neatly categorised (Finance, Weather, Space, Education, etc.), with examples in Python & JavaScript so anyone can get started quickly. Why? Finding good free APIs is often a pain (outdated lists, broken links, no examples). This repo is meant to be a living, maintained resource for developers, students, and hobbyists. Anyone can contribute new APIs, fix broken ones, or add examples – beginner-friendly PRs are welcome. 📂 Repo includes: Curated list of APIs by category Example code snippets (Python & JS) JSON files with structured API metadata Easy contribution guidelines If you know a cool free API, please consider adding it! 🙌 🔗 GitHub Repo: github.com/Humayun-glitch/Awesome-Open-Data-APIs (https://github.com/Humayun-glitch/Awesome-Open-Data-APIs) I’d love your feedback – what categories or features would make this the most useful for you? Thanks! <!-- SC_ON --> submitted by /u/Humayun2318 (https://www.reddit.com/user/Humayun2318)
[link] (https://github.com/Humayun-glitch/Awesome-Open-Data-APIs) [comments] (https://www.reddit.com/r/programming/comments/1nk19zl/i_built_a_communitydriven_list_of_free_open_apis/)
https://www.reddit.com/r/programming/comments/1nk19zl/i_built_a_communitydriven_list_of_free_open_apis/
<!-- SC_OFF -->Hey everyone, I just launched a new open-source project on GitHub: Awesome Open Data APIs 🚀 The goal is simple:
👉 Create a community-driven collection of free & open APIs, neatly categorised (Finance, Weather, Space, Education, etc.), with examples in Python & JavaScript so anyone can get started quickly. Why? Finding good free APIs is often a pain (outdated lists, broken links, no examples). This repo is meant to be a living, maintained resource for developers, students, and hobbyists. Anyone can contribute new APIs, fix broken ones, or add examples – beginner-friendly PRs are welcome. 📂 Repo includes: Curated list of APIs by category Example code snippets (Python & JS) JSON files with structured API metadata Easy contribution guidelines If you know a cool free API, please consider adding it! 🙌 🔗 GitHub Repo: github.com/Humayun-glitch/Awesome-Open-Data-APIs (https://github.com/Humayun-glitch/Awesome-Open-Data-APIs) I’d love your feedback – what categories or features would make this the most useful for you? Thanks! <!-- SC_ON --> submitted by /u/Humayun2318 (https://www.reddit.com/user/Humayun2318)
[link] (https://github.com/Humayun-glitch/Awesome-Open-Data-APIs) [comments] (https://www.reddit.com/r/programming/comments/1nk19zl/i_built_a_communitydriven_list_of_free_open_apis/)
The Discipline of Constraints: What Elm Taught Me About React's useReducer
https://www.reddit.com/r/programming/comments/1nk179k/the_discipline_of_constraints_what_elm_taught_me/
submitted by /u/cekrem (https://www.reddit.com/user/cekrem)
[link] (https://cekrem.github.io/posts/the-discipline-of-constraints-elm-usereducer-lessons/) [comments] (https://www.reddit.com/r/programming/comments/1nk179k/the_discipline_of_constraints_what_elm_taught_me/)
https://www.reddit.com/r/programming/comments/1nk179k/the_discipline_of_constraints_what_elm_taught_me/
submitted by /u/cekrem (https://www.reddit.com/user/cekrem)
[link] (https://cekrem.github.io/posts/the-discipline-of-constraints-elm-usereducer-lessons/) [comments] (https://www.reddit.com/r/programming/comments/1nk179k/the_discipline_of_constraints_what_elm_taught_me/)
Extending not extendable Vaadin components
https://www.reddit.com/r/programming/comments/1nk1pe4/extending_not_extendable_vaadin_components/
submitted by /u/Bobby_Bonsaimind (https://www.reddit.com/user/Bobby_Bonsaimind)
[link] (https://bonsaimind.org/blog/extending-not-extendable-vaadin-components-en.html) [comments] (https://www.reddit.com/r/programming/comments/1nk1pe4/extending_not_extendable_vaadin_components/)
https://www.reddit.com/r/programming/comments/1nk1pe4/extending_not_extendable_vaadin_components/
submitted by /u/Bobby_Bonsaimind (https://www.reddit.com/user/Bobby_Bonsaimind)
[link] (https://bonsaimind.org/blog/extending-not-extendable-vaadin-components-en.html) [comments] (https://www.reddit.com/r/programming/comments/1nk1pe4/extending_not_extendable_vaadin_components/)
Platform Warm-Up is Real: Let it Stretch, Don’t Unleash All Customer Traffic at Once
https://www.reddit.com/r/programming/comments/1nk20tx/platform_warmup_is_real_let_it_stretch_dont/
submitted by /u/congolomera (https://www.reddit.com/user/congolomera)
[link] (https://bencane.com/platform-warm-up-is-real-let-it-stretch-dd0098fa115b?source=friends_link&sk=7061c67ec29690649d2daf34b500cecf) [comments] (https://www.reddit.com/r/programming/comments/1nk20tx/platform_warmup_is_real_let_it_stretch_dont/)
https://www.reddit.com/r/programming/comments/1nk20tx/platform_warmup_is_real_let_it_stretch_dont/
submitted by /u/congolomera (https://www.reddit.com/user/congolomera)
[link] (https://bencane.com/platform-warm-up-is-real-let-it-stretch-dd0098fa115b?source=friends_link&sk=7061c67ec29690649d2daf34b500cecf) [comments] (https://www.reddit.com/r/programming/comments/1nk20tx/platform_warmup_is_real_let_it_stretch_dont/)
Employees, AI, and AI employees
https://www.reddit.com/r/programming/comments/1nk5g15/employees_ai_and_ai_employees/
submitted by /u/slobodan_ (https://www.reddit.com/user/slobodan_)
[link] (https://slobodan.me/posts/employees-ai-and-ai-employees/) [comments] (https://www.reddit.com/r/programming/comments/1nk5g15/employees_ai_and_ai_employees/)
https://www.reddit.com/r/programming/comments/1nk5g15/employees_ai_and_ai_employees/
submitted by /u/slobodan_ (https://www.reddit.com/user/slobodan_)
[link] (https://slobodan.me/posts/employees-ai-and-ai-employees/) [comments] (https://www.reddit.com/r/programming/comments/1nk5g15/employees_ai_and_ai_employees/)
Showcase Blog Posts Automatically on GitHub Profile
https://www.reddit.com/r/programming/comments/1nk7cev/showcase_blog_posts_automatically_on_github/
submitted by /u/mdenic (https://www.reddit.com/user/mdenic)
[link] (https://markodenic.tech/showcase-blog-posts-automatically-on-github-profile/) [comments] (https://www.reddit.com/r/programming/comments/1nk7cev/showcase_blog_posts_automatically_on_github/)
https://www.reddit.com/r/programming/comments/1nk7cev/showcase_blog_posts_automatically_on_github/
submitted by /u/mdenic (https://www.reddit.com/user/mdenic)
[link] (https://markodenic.tech/showcase-blog-posts-automatically-on-github-profile/) [comments] (https://www.reddit.com/r/programming/comments/1nk7cev/showcase_blog_posts_automatically_on_github/)
Replit infuriating customers with surprise cost overruns - What happens when AI becomes essential and unaffordable?
https://www.reddit.com/r/programming/comments/1nk7ywk/replit_infuriating_customers_with_surprise_cost/
submitted by /u/grauenwolf (https://www.reddit.com/user/grauenwolf)
[link] (https://www.theregister.com/2025/09/18/replit_agent3_pricing/?utm_source=fark&utm_medium=website&utm_content=link&ICID=ref_fark) [comments] (https://www.reddit.com/r/programming/comments/1nk7ywk/replit_infuriating_customers_with_surprise_cost/)
https://www.reddit.com/r/programming/comments/1nk7ywk/replit_infuriating_customers_with_surprise_cost/
submitted by /u/grauenwolf (https://www.reddit.com/user/grauenwolf)
[link] (https://www.theregister.com/2025/09/18/replit_agent3_pricing/?utm_source=fark&utm_medium=website&utm_content=link&ICID=ref_fark) [comments] (https://www.reddit.com/r/programming/comments/1nk7ywk/replit_infuriating_customers_with_surprise_cost/)
OpenTelemetry Collector: What It Is, When You Need It, and When You Don’t
https://www.reddit.com/r/programming/comments/1nkd5hd/opentelemetry_collector_what_it_is_when_you_need/
submitted by /u/OuPeaNut (https://www.reddit.com/user/OuPeaNut)
[link] (https://oneuptime.com/blog/post/2025-09-18-what-is-opentelemetry-collector-and-why-use-one/view) [comments] (https://www.reddit.com/r/programming/comments/1nkd5hd/opentelemetry_collector_what_it_is_when_you_need/)
https://www.reddit.com/r/programming/comments/1nkd5hd/opentelemetry_collector_what_it_is_when_you_need/
submitted by /u/OuPeaNut (https://www.reddit.com/user/OuPeaNut)
[link] (https://oneuptime.com/blog/post/2025-09-18-what-is-opentelemetry-collector-and-why-use-one/view) [comments] (https://www.reddit.com/r/programming/comments/1nkd5hd/opentelemetry_collector_what_it_is_when_you_need/)