𝙼𝚊𝚝𝚎𝚞𝚜𝚣 𝙺𝚠𝚊𝚜𝚗𝚒𝚎𝚠𝚜𝚔𝚒

𝙿𝚛𝚘𝚐𝚛𝚊𝚖𝚖𝚎𝚛, 𝚝𝚛𝚊𝚒𝚗𝚎𝚛, 𝚝𝚛𝚘𝚞𝚋𝚕𝚎𝚖𝚊𝚔𝚎𝚛, 𝚌𝚑𝚊𝚗𝚐𝚎 𝚊𝚐𝚎𝚗𝚝.

[Ivar @ivarconr]

@rauchg @vercel @nextjs Love seeing how much value you get from feature flags! One thing I’m curious about—how do you manage the technical debt side? Flags tend to accumulate over time. At @getunleash, we see customers creating 2 flags for every 1 they remove. How do you keep things clean?

[𝙼𝚊𝚝𝚎𝚞𝚜𝚣 𝙺𝚠𝚊𝚜𝚗𝚒𝚎𝚠𝚜𝚔𝚒 @kwasniew]

My favorite 10 books from last year, in no particular order. #GoodreadsYearinBooks https://t.co/jQLPYdVQVK

[𝙼𝚊𝚝𝚎𝚞𝚜𝚣 𝙺𝚠𝚊𝚜𝚗𝚒𝚎𝚠𝚜𝚔𝚒 @kwasniew]

Account sharing might be fine for less critical systems, but when it comes to a feature flag platform, individual accounts are essential.
https://t.co/6bxoi9R9wr

[𝙼𝚊𝚝𝚎𝚞𝚜𝚣 𝙺𝚠𝚊𝚜𝚗𝚒𝚎𝚠𝚜𝚔𝚒 @kwasniew]

Picked up a great habit from my colleagues at @getunleash: using Grafana/VictoriaMetrics to guide day-to-day development. Spent 20% of this week figuring out what to visualize, creating metrics, and setting up charts to showcase the impact of our deliverables.

[𝙼𝚊𝚝𝚎𝚞𝚜𝚣 𝙺𝚠𝚊𝚜𝚗𝚒𝚎𝚠𝚜𝚔𝚒 @kwasniew]

@ivarconr That’s how, as an industry, we got misled by story points, burndown charts, and other effort or money-spent metrics—speeding up from 100 to 200 km/h, only to realize we’re going really fast... but in the wrong direction :)

[𝙼𝚊𝚝𝚎𝚞𝚜𝚣 𝙺𝚠𝚊𝚜𝚗𝚒𝚎𝚠𝚜𝚔𝚒 @kwasniew]

One of the most satisfying results of impact mapping? Addressing behavior changes with deliverables that don’t require writing a single line of code. Winning at software development is all about outcomes, not output.

[𝙼𝚊𝚝𝚎𝚞𝚜𝚣 𝙺𝚠𝚊𝚜𝚗𝚒𝚎𝚠𝚜𝚔𝚒 @kwasniew]

Honored to see our work on @getunleash acknowledged by the @thoughtworks Technology Radar! What makes this especially meaningful is that you can’t buy your way into the Radar—it’s based on real practitioner insights. 🙌 https://t.co/7GWKTRcj7I

[𝙼𝚊𝚝𝚎𝚞𝚜𝚣 𝙺𝚠𝚊𝚜𝚗𝚒𝚎𝚠𝚜𝚔𝚒 @kwasniew]

The recent #CrowdStrike incident reminds us why companies should seriously consider progressive delivery at deploy time (canary deployments) and at runtime (feature flags).

[𝙼𝚊𝚝𝚎𝚞𝚜𝚣 𝙺𝚠𝚊𝚜𝚗𝚒𝚎𝚠𝚜𝚔𝚒 @kwasniew]

Change Requests for feature flags are like Pull Requests for code changes. My latest blog post: https://t.co/d8aylDrOLj

[𝙼𝚊𝚝𝚎𝚞𝚜𝚣 𝙺𝚠𝚊𝚜𝚗𝚒𝚎𝚠𝚜𝚔𝚒 @kwasniew]

My code goes to production almost every day. I love the confidence from my progressive delivery setup:
* Progressive deployment (canary deployment with @kubernetesio release channels operator)
* Progressive release (feature flags controlled releases with @getunleash)

[𝙼𝚊𝚝𝚎𝚞𝚜𝚣 𝙺𝚠𝚊𝚜𝚗𝚒𝚎𝚠𝚜𝚔𝚒 @kwasniew]

When updating components behind a feature flag, it's best to rename the old component and retain the original name for the new development to preserve git history.

[𝙼𝚊𝚝𝚎𝚞𝚜𝚣 𝙺𝚠𝚊𝚜𝚗𝚒𝚎𝚠𝚜𝚔𝚒 @kwasniew]

World Mental Health Day came early this year #metadown

[𝙼𝚊𝚝𝚎𝚞𝚜𝚣 𝙺𝚠𝚊𝚜𝚗𝚒𝚎𝚠𝚜𝚔𝚒 @kwasniew]

Forget about traditional WebPerf metrics like LCP, TTFB, TBT. After skimming through https://t.co/ZZ5AqQwIxJ, I've come up with a new metric for a bloated JS bundle:
BTP - Bigger Than Pornhub.

[𝙼𝚊𝚝𝚎𝚞𝚜𝚣 𝙺𝚠𝚊𝚜𝚗𝚒𝚎𝚠𝚜𝚔𝚒 @kwasniew]

This is what 1 year of doing open-source looks like. Lots of small commits + frequent reviews.

[𝙼𝚊𝚝𝚎𝚞𝚜𝚣 𝙺𝚠𝚊𝚜𝚗𝚒𝚎𝚠𝚜𝚔𝚒 @kwasniew]

My preferences in terms of inherited code:
1) Code that was anticipating likely vector of change
2) Naive code that was not anticipating any change
3) "Extensible" code that was anticipating every possible vector of change

[𝙼𝚊𝚝𝚎𝚞𝚜𝚣 𝙺𝚠𝚊𝚜𝚗𝚒𝚎𝚠𝚜𝚔𝚒 @kwasniew]

6 Things You’ll Find Shocking About Asynchronous Operations:

[Unleash @getunleash]

Oh my - we’re getting a little famous! 😀

Unleash, the leading Open Source Feature Flag platform (that’s us! 😊) just hit 9k stars on GitHub at
https://t.co/4tj9PAg937

Thank you #Unleash community!

[𝙼𝚊𝚝𝚎𝚞𝚜𝚣 𝙺𝚠𝚊𝚜𝚗𝚒𝚎𝚠𝚜𝚔𝚒 @kwasniew]

A whirlwind tour around feature toggles from @DevoxxPL 2023. Probably my most rehearsed and polished talk ever :)
https://t.co/QAIIexPZcZ

[𝙼𝚊𝚝𝚎𝚞𝚜𝚣 𝙺𝚠𝚊𝚜𝚗𝚒𝚎𝚠𝚜𝚔𝚒 @kwasniew]

Passing TypeScript errors through ChatGPT produces Elm-like compiler errors for humans.

[𝙼𝚊𝚝𝚎𝚞𝚜𝚣 𝙺𝚠𝚊𝚜𝚗𝚒𝚎𝚠𝚜𝚔𝚒 @kwasniew]

@realMarcinNowak @DevoxxPL Dzięki :) Godziny przygotowań się opłaciły.

[𝙼𝚊𝚝𝚎𝚞𝚜𝚣 𝙺𝚠𝚊𝚜𝚗𝚒𝚎𝚠𝚜𝚔𝚒 @kwasniew]

No stress, it’s just a conference room. The room :) @DevoxxPL