kotlinx.serialization 1.2.0: Faster JSON Handling, Value Classes, API Docs & More
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Kotlinx.serialization 1.2.0 is out! In this video, we explore the highlights included with this new version: high-speed JSON handling, support for Kotlin value classes and unsigned integer types, new and improved documentation and guides, alternative names for JSON fields, and expanded support for ProtoBuf schemas.
To get all the details, check out the official blog post at 👉 https://kotl.in/1.2.0-Serialization
00:00 Overview
00:25 Intro
00:33 When do we need serialization?
01:00 Getting started with kotlinx.serialization
01:32 Performance upgrades in 1.2.0
02:10 Learning Materials & New API Documentation
03:07 Serializing value classes
04:15 Serializing unsigned integer types
04:55 Alternative Names for JSON fields
05:41 Experimental Protobuf Schema Generator
07:18 Time for feedback
07:27 Summary
We learn about how to transform Kotlin objects to JSON and back faster than ever before, even when using Kotlin Multiplatform – just by upgrading to version 1.2.0! It is up to twice as fast as previous versions when parsing JSON into type-safe Kotlin objects, and turning Kotlin objects into their text representations. The magic behind this performance upgrade? A rewritten JSON decoder (responsible for turning text into Kotlin objects), and a significantly optimized JSON encoder (responsible for turning Kotlin objects into text).
Kotlinx.serialization 1.2.0 also offers first-class JSON encoding and decoding support for value classes and unsigned integer types, which were introduced in Kotlin 1.5. We explore how the built-in JSON serialization now works for value classes and unsigned number types out of the box.
For JSON fields that have different names but the same meaning, for example to maintain backwards compatibility, we explore the new @JsonNames annotation. We see how using it makes it easier to work with services that return differently named fields representing the same values, survive schema migrations, and provide graceful upgrades for applications.
We also explore the all-new API documentation, which has an overhauled design, and symbols that make it easy to navigate through the reference docs.
Support for Protocol Buffers, the binary serialization format from Google, gets expanded, with an experimental schema generator. We learn about the new principles for generating `.proto` files from your Kotlin data classes, which allow us to generate representations of the communication format in other languages, including Python, C++, TypeScript, and many more.
#kotlin #serialization #json #protobuf #libraries #android #jvm #webdev
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