SwayDB

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Since each [Level](http://swaydb.io/implementation/level/?language=scala) can have the same configuration there should a flag that configures last level's compaction to not re-create a [Segment](http://swaydb.io/implementation/segment/?language=scala) that was copied from upper levels.

simerplaha

This task is at API level only. Understanding core internals is not required. To test stability currently there are two apps that stress test SwayDB's API. - [Weather data simulation](https://github.com/simerplaha/SwayDB/blob/master/swaydb-stress/src/test/scala/swaydb/weather/WeatherDataSpec.scala)...

simerplaha

Java Configuration object should be immutable

2

Java configuration functions are mutable. For example the following `setClearAppliedFunctionsOnBoot` function is mutable. This function and others should be immutable. ```java Map products = PersistentMap .functionsOn(Paths.get("my_dir"), stringSerializer(), doubleSerializer(), Arrays.asList(discount)) .setClearAppliedFunctionsOnBoot(true)...

simerplaha

Currently we do not have a strategy to reduce write amplification when handling random updates that spans over multiple Segments. Need to test the following approaches 1. Creating temporary levels...

simerplaha

Smaller [Segments](http://swaydb.io/implementation/segment/?language=java) (segments that are < [minSegmentSize](minSegmentSize)) get collapsed in the last level to create larger Segments. Currently a merge is executed which has memory and read overhead which is...

simerplaha

- Recovering [LevelZero](http://swaydb.io/implementation/meters/levelZeroMeter/?language=java) map entries could be faster by avoiding flushes. - Compaction shutdown can be faster by ignore pending compaction tasks.

simerplaha

Improve test coverage on compaction

1

More compaction tests are required to get coverage compaction behaviour.

simerplaha

We can very easily spawn multiple database instances like following ```scala val map1 = swaydb.persistent.Map[Int, String, Nothing, Bag.Less]("myMap1") val map2 = swaydb.persistent.Map[Int, String, Nothing, Bag.Less]("myMap2") val set = swaydb.persistent.Set[String, Nothing,...

simerplaha

Back up all databases files to target path. ```scala db.backup(path: Path) ```

simerplaha

SwayDB does not have any external dependencies other than compression libraries (LZ4 and Snappy) which are optionally enabled. Majority of the effects are implemented in `Effect.scala`. May be moving all...

simerplaha