Johannes Rudolph

Scala 3: very slow / hanging rule compilation for `~` chaining subrules

1

As reported by @hughsimpson in https://github.com/akka/akka-http/pull/4079#issuecomment-1091141651: > found that if there were more than two non-literal subrules in a parser chained with ~ it basically takes forever to compile, unless...

Get rid of type-level logic

3

Currently, parboiled2 uses two complementary compile-time mechanisms to make sure a parser is well-formed: - first, pretty advanced type-level logic is used to make sure that parsers were combined correctly...

This would help the `RotatingKeySslEngineProvider` to use and check new certificates regularly.

Refs #31419 Tentative fix. I haven't been able to reproduce it in the tests yet...

Create optimized FlattenConcat which does not require materialization for static incoming Sources

2

If a source can be determined to be a - `Source.single` - `Source.apply(Iterable)` - `Source.fromIterator` - (`Source.fromFuture` - might already introduce too much duplication with the FutureSource impl) - etc....

Starting from k8s 1.22 ReplicaSets are not scaled down youngest first any more

5

(more of an akka-management or docs issue but I'll post it here for better visibility) Starting from recent Kubernetes versions, ReplicaSets are not scaled down with the youngest node first....

=str fix Scala 3 signature for Tcp() / AkkaSSLConfig()

2

This was broken for some reason in #30324 / 3a3e643e074d2e57e320b8efb38bb7fba440e4b3 and not covered by tests. Fixes #31266 Can later be fixed in https://github.com/akka/akka-http/pull/4079

MergeHub may lead to OOM in dynamic situations

3

Problem: MergeHub does not backpressure or limit attaching new producers to the hub. Every producer is immediately allowed to push up to the configured number of elements to the shared...

stream: use ConcurrentHashMap to track in-progress async callbacks

7

Refs #29557 In the existing code, adding a callback and cleaning up callbacks contend for updating the AtomicReference. The way it is implemented, adding a callback invocation would invalidate an...

PlayBodyParser.file should handle StreamConverters.fromOutputStream failing

1

Right now it does `map(_ => Right(...))`, i.e. it assumes that writing to the file worked in all cases, which is not given if the stream was failed in any...