minor fixes

Author: Lokowandtg

cloudfoundry-client-reactor/src/main/java/org/cloudfoundry/reactor/uaa/UaaThrottler.java

@@ -62,9 +62,19 @@ private UaaThrottler() {
     public void addLimiterMapping(LimiterMapping mapping) {
         mappings.add(new LimiterMappingWithRunningRequests(mapping));
         int delay = mapping.timeBase();
-        if (minDelay > delay) {
+        if (minDelay > delay && delay > 0) {
             minDelay = delay;
         }
+        if (mapping.limit() > 10000) {
+            LOGGER.info(
+                    "UaaThrottler: using a huge value for rate limit might slow down execution when"
+                            + " back-pressure is high.");
+            LOGGER.info(
+                    "UaaThrottler: Mapping "
+                            + mapping.name()
+                            + " uses a limit of "
+                            + mapping.limit());
+        }
     }
 
     public Mono<Token> acquire(String url) {
@@ -111,7 +121,7 @@ private synchronized Mono<Token> tryAcquire(String url, Sinks.One<Void> waiter)
      * @param url
      * @return
      */
-    synchronized boolean checkDelayNeededAndResume(String url) {
+    boolean checkDelayNeededAndResume(String url) {
         Instant now = Instant.now();
         Set<Token> removed = new HashSet<>();
         try {