Question 1

How to add jsoniter-scala to an sbt project?

Accepted Answer

Add 'jsoniter-scala-core' as a regular dependency and 'jsoniter-scala-macros' with 'compile-internal' or 'provided' scope. For Scala CLI, use 'using dep' for core and 'using compileOnly.dep' for macros, as shown in the README.

Question 2

jsoniter-scala vs circe: which should I choose?

Accepted Answer

jsoniter-scala is faster for raw parsing/serialization due to compile-time codecs, but circe offers a more functional, AST-based approach. Use jsoniter-scala for performance-critical APIs; consider circe if you prefer composable decoders/encoders or need integration with its ecosystem.

Question 3

Can jsoniter-scala skip unknown JSON fields?

Accepted Answer

Yes, it's configurable via compile-time options. By default, it throws errors for unexpected fields, but you can enable skipping them to be more lenient during parsing.

Question 4

How to parse large JSON streams efficiently?

Accepted Answer

Use methods like 'scanJsonArrayFromInputStream' or 'scanJsonValuesFromInputStream' to process values incrementally without loading everything into memory, which is ideal for streaming data.

Question 5

Does jsoniter-scala support Java 8 time types?

Accepted Answer

Yes, it supports 'java.time.*' types with ISO-8601 representation. For Scala.js and Scala Native, you may need to add 'scala-java-time' for full timezone support beyond UTC.

Question 6

What happens if my JSON is too large?

Accepted Answer

jsoniter-scala doesn't validate input length by default, so for untrusted data, you should check size before parsing. Use streaming methods or set buffer limits to mitigate risks.

jsoniter-scala

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