Fragments 2019

How to improve the performance of JSON parsing in Android, and why STAG ?

This talk will cover the internal working of the infamous GSON library, and the performance bottlenecks that we hit, and how to take a Reflection-Less approach for the same.

Outline

• How GSON serializes/deserailizes objects ?
• Why is Reflection Expensive ?
• Performance Issues with Current Implementation
• What is TypeAdapter, and why to use it ?
• Introduction to STAG
• STAG in Parity with GSON

Speaker bio

While working on the performance aspects of parsing, we came across a library STAG. The overall idea of the library was good, and with initial testing we found a good boost in parsing performance. We added a bunch of features, and contributed back to the open source community. Now, STAG is in parity with GSON, and we had ~20% improvement in parsing time, and cold boot time.

Mobile Developer @Flipkart

Slides

https://docs.google.com/presentation/d/1vwhYP-sZAWSZjEeXnQaAKDcPPadLBrFQAUonNh0PwM0/edit?usp=sharing