req
finch
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req
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How to implement a disk cache plugin for Elixir's Req HTTP client?
> no error checking at all (I assume it just panics or exception?)
In Elixir, bang functions per convention will raise on error. `get/2` will return error tuples allowing you to handle errors. In fact, get!/2 just calls get/2 and raises for you[^1].
> no mention of JSON at all
Req is the most "batteries included" Elixir HTTP lib out there. I can't speak for Wojtek, but I believe the goal was to make Req extremely easy to use in scripting or things like LiveBook without having to do much work. That being said, the automatic decoding is mentioned in the readme[^2] and the docs[^3].
> if "body" is JSON, how do you even get the raw body, or can you?
Per the docs[^3], you can either skip with a `:raw` option, or just build your own request using only the steps you want.
> just seems over engineered/over fitted whatever you want to call it.
Fair, but again, this library is designed to be on that end of the spectrum. There are plenty of other libraries further down the stack that you can use. I am partial to Finch[^4], upon which Req is built.
To address the sibling comment about "Let it Crash", the language allows you to easily recover from crashes, but that is for resiliency, not error handling. In practice you would use the non-bang get/2, pattern match on the response, handle any errors, perhaps use Kernel.get_in/2 to safely traverse the map, etc. The example provided by the author is not "production ready".
[^1]: https://github.com/wojtekmach/req/blob/v0.3.11/lib/req.ex#L3...
- A Breakdown of HTTP Clients in Elixir
finch
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Notes on streaming downloads with progress in Elixir
We will use the Req library, a superset of Finch, which is itself a superset of Mint.
- How to implement a disk cache plugin for Elixir's Req HTTP client?
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Taming the Time: how to install & develop with XTDB
However, not every Elixir’s HTTP client supports sending requests using HTTP2 - so we have to search for another option rather than using HTTPoison that we widely use in other projects. We’ve decided to go with Finch, as apart from supporting HTTP2 it also focuses on performance and provides telemetry support out of the box - which we’ve found very useful for tracing and debugging purposes.
- ElixirのHTTPクライアントでお天気情報を取得したい(2022年)
What are some alternatives?
tesla - The flexible HTTP client library for Elixir, with support for middleware and multiple adapters.
mint - Functional HTTP client for Elixir with support for HTTP/1 and HTTP/2 🌱
httpotion - [Deprecated because ibrowse is not maintained] HTTP client for Elixir (use Tesla please)
gun - HTTP/1.1, HTTP/2, Websocket client (and more) for Erlang/OTP.
httpoison - Yet Another HTTP client for Elixir powered by hackney
Crawly - Crawly, a high-level web crawling & scraping framework for Elixir.
httprot - Prot prot prot.
swagger-petstore - swagger-codegen contains a template-driven engine to generate documentation, API clients and server stubs in different languages by parsing your OpenAPI / Swagger definition.
http_proxy - http proxy with Elixir. wait request with multi port and forward to each URIs
aeson - A fast Haskell JSON library
ivar - Ivar is an adapter based HTTP client that provides the ability to build composable HTTP requests.