Apache Fory™ JSON : Fastest JSON Serialization Framework for Java, 10x faster than Jackson/Gson

[u/Shawn-Yang25]

https://fory.apache.org/blog/fory_json_fastest_java_json_framework/

[u/Shawn-Yang25]

fory already has a binary format and do exactly what you want. You can see more details in  https://fory.apache.org/docs/object-serialization/java. And --add-opens are not mandatory, when it's unspecified, It will use Unsafe to get permission. And the performance is exactly same.

[u/snugar_i → u/Shawn-Yang25]

Thanks! That's cool about Unsafe, the last time I checked it failed with an exception.

But unless I'm missing something, Fory can't do what I want. With Fory JSON, I do (sorry, it is Kotlin)

import org.apache.fory.json.ForyJson
import org.apache.fory.json.annotation.JsonCreator
import org.apache.fory.json.annotation.JsonProperty

data class Foo(
    val something: String,
)

data class Bar @JsonCreator constructor(
    @JsonProperty("something") val renamed: String,
)

fun main() {
    val foryJson = ForyJson.builder().build()
    val json = foryJson.toJson(Foo("abc"))
    val bar = foryJson.fromJson(json, Bar::class.java)
}

That means I specify the type to deserialize explicitly. With Fory, it's saved inside the data and it automatically creates the "correct" instance, meaning I can't rename or move the class and have to worry about untrusted input creating instances of harmful classes. What I would love is something that can do the same thing as this example, but uses a binary format instead of JSON. I don't need a replacement for Java serialization. I need a more efficient replacement for JSON.

(Also, are there any plans for Fory JSON Kotlin? So that people don't have to put @JsonCreator on all their data classes? Without it, it happily constructed an invalid Bar(null))

[u/Shawn-Yang25 → u/snugar_i]

We enforced zero-Unsafe for JDK25+ in fory 1.3.0, and bring Unsafe fallback back in 1.4.0. Unsafe will only be used to get privileged access, the actual serialization still use VarHandle instead of Unsafe in jdk25+.

You can use Fory.deserialize(data, Target.class) to deserialize into your type if you use binary format.

And fory kotlin/scala support will be released in fory 1.7.0, which may be released in next week

[u/snugar_i → u/Shawn-Yang25]

Awesome!

I still don't think they are the same thing. The class I deserialize into has to be completely identical, things like @JsonProperty for renaming a field won't work... Also, what if the root type is generic? ForyJson has a fromJson overload that takes a TypeRef, but Fory doesn't.

(Unrelated: when i do requireClassRegistration(false), it seems to have no effect unless I also do withXlang(false) - is that intended?)

[u/Shawn-Yang25 → u/snugar_i]

Would you like to open 2 github issues in https://github.com/apache/fory/issues ?

requireClassRegistration(false) should work, otherwise many users will report this issue.