What is Kotlin Serialization, and should I use it?
summary
Kotlin Serialization uses a compiler plugin and runtime to generate JSON serializers, supports collections, enums, sealed classes (polymorphism via a serializers module) and is usable with Retrofit via a Jake Wharton Retrofit converter. It needs @Serializable on properties, often requires custom serializers for objects, dates and generics, and currently lacks automatic object serialization; docs and API are experimental with breaking changes possible. Performance is comparable to Moshi/GSON; good for new Kotlin/multiplatform projects, avoid wholesale replacement in stable production.
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