Http4s
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Http4s | hn-search | |
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24 | 1,608 | |
2,505 | 523 | |
0.4% | 1.3% | |
9.8 | 2.9 | |
2 days ago | 6 months ago | |
Scala | TypeScript | |
Apache License 2.0 | GNU General Public License v3.0 or later |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Http4s
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How to get started?
http4s is a Typelevel project, and therefore falls into the "program in Scala as if it were Haskell" category. Many people find this off-putting, but honestly, I think with the resources listed above, this is the option at the best intersection of "mature" and "well-documented" available in Scala. The reason it's off-putting to many people is that Haskell-style pure FP isn't mainstream, so it isn't so much a matter of learning a new technology as it is a matter of learning a new paradigm, which necessarily means surfacing and unlearning things you already know, and perhaps confronting the uncomfortable feeling that things you thought were "fundamental," "have to be that way," aren't, and don't. I personally found this process liberating. But not everyone does.
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Server Stack Options for Scala
If you want a mature REST API library, I recommend http4s. Be aware, though, that it’s based on purely-functional programming with Cats, cats-effect, and fs2, so if you’re not familiar with them or aren’t prepared to commit to the paradigm, the learning curve may be daunting, seem pointless, or both.
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Sequential application of a constructor?
See also cats-effect and fs2. cats-effect gives you your IO Monad (and IOApp to run it with on supported platforms). fs2 is the ecosystem’s streaming library, which is much more pervasive in functional Scala than in Haskell. For example, http4s and Doobie are both based on fs2.
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Grasping the concepts and getting them down to earth
Most important/known: * https://http4s.org/ - an HTTP client/server * https://github.com/typelevel/fs2 - streaming * https://github.com/tpolecat/doobie - JDBC
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Relative popularity of programming languages on Hacker News
Scala devs are too busy wondering about free monads and F[Request[F] => Response[F]]. I am very pleased by http4s, Doobie, ScalaJS, and the whole ecosystem, really: https://http4s.org
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http4s as a replacement for akka-http?
In reality, your performance issues will not be http4s, but something else. That being said, there are improvements that http4s can and is making, and I'm quite excited about the future 1.0 release, which has some important and fundamental performance improvements already, like a a 125% performance improvement on the plaintext benchmark from https://github.com/http4s/http4s/pull/6091 - and finally, yes, akka-http does have very good performance, but you can also get good performance out of http4s.
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Is Scala a good choice for a data intensive web backend?
http4s for REST services.
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Scala became Typelevel/Zio only ecosystem?
This is a long list of misunderstandings I don’t have the patience to unpack. Instead, let me refer you to the links in my top comment in the thread, then suggest you learn at least http4s, a purely-functional web service library that’s been used in production for a decade or so now.
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Pleasant to use Scala libraries
The most popular nowadays are - I guess - akka-http and http4s. You can also use Play if you don't want to start from scratch but prefer a framework-based approach.
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Why do all frameworks use OOP? (php)
There are functional frameworks: https://http4s.org/
hn-search
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Ask HN: Why are posts about the Gaza genocide being censored?
Many stories related to the ongoing famine and genocide in Gaza are tech-related: tech companies big and small are enabling Israel's military action in Gaza and in some cases directly supporting the occupation and genocide. The injustices of the real world are often played out again in cyber space, what some people have called a "digital apartheid".
This week, both Google and Amazon employees protested their company's involvement in this, and the stories relating to this were immediately removed from Hacker News front page. Why?
Why is HN flagging anything related to this topic?
https://hn.algolia.com/?dateRange=pastWeek&page=0&prefix=false&query=Israel&sort=byDate&type=story
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Calculus Made Easy
Here some of the previpus submissions, with lots of comments.
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We Need to Rewild the Internet
Sorry for the offtopicness, but trollish usernames aren't allowed on HN, so we've banned this account.
If you want to pick a different username, we can rename it for you and unban the account, as long as the username is genuinely neutral.
https://hn.algolia.com/?sort=byDate&dateRange=all&type=comme...
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T-Mobile Employees Across the Country Receive Cash Offers to Illegally Swap Sims
Lazier than you think! You almost nerdsniped me into seeing how fast I could whip up a crawler but then I checked the search and found out it can find comments and use a custom date range.
https://hn.algolia.com/?dateEnd=1700092800&dateRange=custom&...
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A Teenager
We really do love pudding.cool[1]- I'd never bothered to go look at what it's actually all about till today, and you should too if you've not, because it wasn't exactly as I expected: https://pudding.cool/about/
[1]https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que...
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Knuth–Morris–Pratt Illustrated
Is this post showing a bug in HN? It says it was posted 10 hours ago, but Algolia says it was posted 2 days ago
https://hn.algolia.com/?dateRange=pastWeek&page=0&prefix=tru...
And mehulashah's comment that the thread claims was posted 7 hours ago was also posted two days ago, according to Algolia
https://hn.algolia.com/?dateRange=pastWeek&page=0&prefix=tru...
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Ramanujan's Lost Notebook
From https://hn.algolia.com/?dateRange=all&page=0&prefix=false&qu... it looks likethere are like 5 or 6 post per year.
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Supabase – General Availability Week
hey hn, supabase ceo her
we just announced GA, after ~4 years of beta. for those who don't know: supabase is a postgres hosting company. we also host other open source "backend" tools that make it easy to get started with postgres (tools like PostgREST for auto-generate APIs [0])
we owe a lot to the HN community. you launched us 4 years ago [1], when we were just a few developers. since then HN has been a staple in our journey, one of the best sources of product feedback [2]
the GA badge is mostly to signify organizational readiness. we're at a stage where we can take any profile of customer. we have a support team that works 24/7, and a success team that will help customers improve their postgres usage. we released our Index Advisor [3] yesterday, and we'll be releasing a few more products this week that helps customer with performance and security.
on a personal note: i read HN most days, and love going through the ShowHN's to see what devs are building. thanks for being an awesome community and my favorite place to lurk on the internet. i'll stick around to answer any questions
[0] PostgREST: https://postgrest.org
[1] Launch: https://news.ycombinator.com/item?id=23319901
[2] HN journey: https://hn.algolia.com/?dateRange=all&page=0&prefix=false&qu...
[3] Index Advisor: https://news.ycombinator.com/item?id=40028111
- x86 and x86_64 software optimization resources
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A Day in the Life of a Walmart Manager Who Makes $240k a Year
If there's a workaround, it's ok. Users usually post workarounds in the thread.
This is in the FAQ at https://news.ycombinator.com/newsfaq.html and there's more explanation here:
https://hn.algolia.com/?dateRange=all&page=0&prefix=false&so...
What are some alternatives?
Akka HTTP - The Streaming-first HTTP server/module of Akka
duckduckgo-locales - Translation files for <a href="https://duckduckgo.com"> </a>
sttp - The Scala HTTP client you always wanted!
v - Simple, fast, safe, compiled language for developing maintainable software. Compiles itself in <1s with zero library dependencies. Supports automatic C => V translation. https://vlang.io
ZIO - ZIO — A type-safe, composable library for async and concurrent programming in Scala
parser - 📜 Extract meaningful content from the chaos of a web page
Finch.io - Scala combinator library for building Finagle HTTP services
readability - A standalone version of the readability lib
zio-http - A next-generation Scala framework for building scalable, correct, and efficient HTTP clients and servers
yq - Command-line YAML, XML, TOML processor - jq wrapper for YAML/XML/TOML documents
Spray - A suite of scala libraries for building and consuming RESTful web services on top of Akka: lightweight, asynchronous, non-blocking, actor-based, testable
milkdown - 🍼 Plugin driven WYSIWYG markdown editor framework.