fastjson VS oapi-codegen

I’ve used fastjson when unmarshalling to Structs is inconvenient. https://github.com/valyala/fastjson

Interesting approach, even though reflection support is supposed to be landing soon, this would be really really useful when using TinyGo. (Fro example, writing web backend serverless functions with Fermyon’s Spin framework for WASM that needs to return JSON). Do you have any benchmarks on how it performs vs stdlib’s encoding/json and/or something like fastjson?

It relies heavily on bytes.IndexOf for which Go provides SIMD optimizations transparently. However, it has some correctness issues when parsing malformed json that might need to be addressed. Generally it is recommended to be used with trusted json documents for internal services and may require further testing before being used to parse arbitrary json documents.

Try fastjson library. It allows you to grab deeply nested json objects without marshalling the entire json.

Como herramientas te recomiendo: FastJson https://github.com/valyala/fastjson : Si necesitas leer jsons Testify https://github.com/stretchr/testify : Para mockear y testear

In Go if I need to extract just a few fields from a large JSON document it's hard to beat https://github.com/valyala/fastjson

Another option is to use what I like to call "Lazy" decoders, like https://github.com/valyala/fastjson which will work with TinyGo, but doesn't have the same type of API as the standard lib (or alternatives) in terms of Marshaling and Unmarshalling. Instead you "Parse" a JSON object, and use Getters to access the types you want.

what’s the difference between this and https://github.com/deepmap/oapi-codegen

During daytime, and especially work time, I used a great tool to generate code from OpenAPI specification: deepmap/oapi-codegen.

Then you can use oapi-codegen or openapi-generator to generate the Go (or other language) SDK for it.

Deepmap OpenAPI code generator

Luckily, Forem/DEV is open source and provides great API documentation and specification. I used oapi-codegen to automatically generate a Go API client. Then, I simply had to walk the root articles directory and:

I'm using https://github.com/deepmap/oapi-codegen to auto gen some types for my api as I want the contract to be the source of truth. However, I'm running into an issue, the same as (https://stackoverflow.com/questions/77237210/how-to-generate-models-from-openapi-with-ref) where oapi-codegen isn't recognizing references to local files. Has anyone run into this and found a work around? or is there a better tool to use for this

For Go, I've found https://github.com/deepmap/oapi-codegen/, and it works well.

I’m using oapi-codegen in my project and I don’t think it ships with a validator.

We're using https://github.com/deepmap/oapi-codegen at work while having an OpenAPI spec. When the spec changes, backend/frontend/mobile regenerate their server/client