Elastic4s
jsoniter-scala
Elastic4s | jsoniter-scala | |
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2 | 29 | |
1,633 | 707 | |
- | - | |
8.7 | 9.6 | |
7 days ago | about 6 hours ago | |
Scala | Scala | |
Apache License 2.0 | MIT License |
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For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Elastic4s
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How to decouple logic from Scala future?
Here's an example from a library I've used: https://github.com/sksamuel/elastic4s/blob/master/elastic4s-core/src/main/scala/com/sksamuel/elastic4s/Executor.scala. Then you can provide your own Executor implementation and it will be used instead of the FutureExecutor. You can check out the top level of that repo to see how much complexity this introduces.
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Abstraction layers over the various JSON libraries?
Seems like the accepted solution is to have a separate subproject for each of the ~5 major json libraries. For example see elastic4s (elastic4s-jackson, elastic4s-circe, ...) or akka-http-json.
jsoniter-scala
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1BRC Merykitty's Magic SWAR: 8 Lines of Code Explained in 3k Words
What an amazing step by step explanation!
More than 2 years ago I found that byte array view var handles are quite suitable to cook efficient SWAR routines with Java/Scala.
See a lot of other examples of SWAR usage, like parsing Base16/64 string, java.time.* and number values directly from byte arrays:
https://github.com/plokhotnyuk/jsoniter-scala/blob/master/js...
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The Newest Java Json Benchmark Results just dropped
Afaik dsl-json came up with a lot of improvements and inspired a several other libraries like JsonIter and jsonIter-scala. Jsoniter-scala by u/plokhotnyuk is probably the most optimized JSON library on the JVM at this point, and seems to power most of the Scala ecosystem. Some implementations/optimizations eventually made their way back into Jackson and other libraries.
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Please try my JSON library
I was on your place more then 5 years ago, when cut the 1st release of jsoniter-scala.
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Post your problems with Scala 3/2.13 compiler performance!
I've just increased compiler performance in ~1.5x times by adding these JVM options for the code cache
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smithy-translate : a CLI tool to turn openapi specs and json-schema specs into smithy specs, written in Scala
We have our own open-source code-generator that produces Scala code from Smithy. The code module is entirely dependency-free, and the generated code is not biased towards any library, be that http or json. We do however have out-of-the-box integration with jsoniter and http4s.
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Why does Scala seem to be slow at benchmark results?
You can use jsoniter-scala. It is easy to use like upickle.
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Scala needs *highly* efficient libraries to survive in a multi-core age
BTW, jsoniter-scala uses it for faster parsing and serialization using SWAR techniques, like here.
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Using Circe with GADT
Probably you should have both codecs (for Foo and for its T) are implicitly available in the scope, like it is done in the following test for jsoniter-scala:
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Starting with scala
BEWARE: uJson is vulnerable under DoS attacks
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Is Scala a good choice for a data intensive web backend?
Please see sources (and GitHub history of development) of jsoniter-scala as an example in the domain of JSON parsing and serialization.
What are some alternatives?
Slick - Slick (Scala Language Integrated Connection Kit) is a modern database query and access library for Scala
circe - Yet another JSON library for Scala
ReactiveCouchbase - Play 2 plugin for ReactiveCouchbase
json4s - JSON library
Shade - Memcached client for Scala
DSL-JSON - High performance JVM JSON library
Salat - Salat is a simple serialization library for case classes.
jackson-module-scala - Add-on module for Jackson (https://github.com/FasterXML/jackson) to support Scala-specific datatypes
doobie - Functional JDBC layer for Scala.
Play JSON - The Play JSON library
scala-sql - scala SQL api
spray-json - A lightweight, clean and simple JSON implementation in Scala