Change behavior of simulateRemotePods to use the Pods API

build.sbt

@@ -13,7 +13,7 @@ val sttpVersion           = "3.9.6"
 val calibanVersion        = "2.8.1"
 val redis4catsVersion     = "1.5.2"
 val redissonVersion       = "3.27.1"
-val scalaKryoVersion      = "1.0.2"
+val scalaKryoVersion      = "1.2.0"
 val testContainersVersion = "0.41.3"
 val scalaCompatVersion    = "2.12.0"
 
@@ -212,6 +212,13 @@ lazy val commonSettings = Def.settings(
       "com.dimafeng" %% "testcontainers-scala-core" % testContainersVersion % Test
     ),
   Test / fork    := true,
+  Test / javaOptions ++= Seq(
+    // Kryo requires this with the recent versions of Java
+    "--add-opens=java.base/java.util=ALL-UNNAMED",
+    "--add-opens=java.base/java.lang=ALL-UNNAMED",
+    "--add-opens=java.base/java.lang.invoke=ALL-UNNAMED",
+    "--add-opens=java.sql/java.sql=ALL-UNNAMED"
+  ),
   scalacOptions ++= Seq(
     "-deprecation",
     "-encoding",

entities/src/main/scala/com/devsisters/shardcake/Sharding.scala

@@ -257,21 +257,15 @@ class Sharding private (
     replyId: Option[String],
     replyChannel: ReplyChannel[Res]
   ): Task[Unit] =
-    if (config.simulateRemotePods) {
-      serialization
-        .encode(msg)
-        .flatMap(bytes => sendToLocalEntity(BinaryMessage(entityId, recipientTypeName, bytes, replyId), replyChannel))
-    } else {
-      // if pod = self, shortcut and send directly without serialization
-      entityStates.get.flatMap(
-        _.get(recipientTypeName) match {
-          case Some(state) =>
-            state.entityManager.asInstanceOf[EntityManager[Msg]].send(entityId, msg, replyId, replyChannel)
-          case None        =>
-            ZIO.fail(new Exception(s"Entity type $recipientTypeName was not registered."))
-        }
-      )
-    }
+    // if pod = self, shortcut and send directly without serialization
+    entityStates.get.flatMap(
+      _.get(recipientTypeName) match {
+        case Some(state) =>
+          state.entityManager.asInstanceOf[EntityManager[Msg]].send(entityId, msg, replyId, replyChannel)
+        case None        =>
+          ZIO.fail(new Exception(s"Entity type $recipientTypeName was not registered."))
+      }
+    )
 
   private def sendToPod[Msg, Res](
     recipientTypeName: String,
@@ -281,7 +275,7 @@ class Sharding private (
     replyChannel: ReplyChannel[Res],
     replyId: Option[String]
   ): Task[Unit] =
-    if (pod == address) {
+    if (pod == address && !config.simulateRemotePods) {
       val run = sendChannel.foreach(sendToSelf(recipientTypeName, entityId, _, replyId, replyChannel))
       sendChannel match {
         case _: SendChannel.Single[_] => run

entities/src/test/scala/com/devsisters/shardcake/BroadcastingSpec.scala

@@ -9,11 +9,7 @@ import scala.util.Success
 
 object BroadcastingSpec extends ZIOSpecDefault {
 
-  private val config = ZLayer.succeed(
-    Config.default.copy(
-      simulateRemotePods = true
-    )
-  )
+  private val config = ZLayer.succeed(Config.default)
 
   def spec: Spec[TestEnvironment with Scope, Any] =
     suite("BroadcastingSpec")(

storage-redis/src/main/scala/com/devsisters/shardcake/StorageRedis.scala

@@ -52,7 +52,10 @@ object StorageRedis {
 
         def savePods(pods: Map[PodAddress, Pod]): Task[Unit] =
           stringClient.del(config.podsKey) *>
-            stringClient.hSet(config.podsKey, pods.map { case (k, v) => k.toString -> v.version }).unit
+            stringClient
+              .hSet(config.podsKey, pods.map { case (k, v) => k.toString -> v.version })
+              .when(pods.nonEmpty)
+              .unit
       }
     }
 }