Properly document and unify the default REST Client connection pool size

Comment from Guillaume:

The default REST Client connection pool size for RESTEasy Classic was
50, but the one for Quarkus REST is 20.
Given most of the time, the limit factor will be the responsiveness of the
server, not the speed of the implementation, I think we should be
conservative and keep the same values.

Co-authored-by: Guillaume Smet <[email protected]>

Author: weltonrodrigo

extensions/resteasy-classic/rest-client-config/runtime/src/main/java/io/quarkus/restclient/config/RestClientsConfig.java

@@ -150,6 +150,7 @@ public interface RestClientsConfig {
      * <p>
      * Can be overwritten by client-specific settings.
      */
+    @WithDefault("50")
     Optional<Integer> connectionPoolSize();
 
     /**
@@ -542,6 +543,7 @@ default Optional<String> uriReload() {
         /**
          * The size of the connection pool for this client.
          */
+        @WithDefault("50")
         Optional<Integer> connectionPoolSize();
 
         /**

independent-projects/resteasy-reactive/client/runtime/src/main/java/org/jboss/resteasy/reactive/client/impl/ClientImpl.java

@@ -89,7 +89,7 @@ public class ClientImpl implements Client {
     private static final Logger log = Logger.getLogger(ClientImpl.class);
 
     private static final int DEFAULT_CONNECT_TIMEOUT = 15000;
-    private static final int DEFAULT_CONNECTION_POOL_SIZE = 20;
+    private static final int DEFAULT_CONNECTION_POOL_SIZE = 50;
 
     final ClientContext clientContext;
     final boolean closeVertx;