added throttling

gbcs-api/src/main/java/net/woggioni/gbcs/api/Cache.java

@@ -4,6 +4,7 @@ import net.woggioni.gbcs.api.exception.ContentTooLargeException;
 
 import java.nio.channels.ReadableByteChannel;
 
+
 public interface Cache extends AutoCloseable {
     ReadableByteChannel get(String key);
 

gbcs-api/src/main/java/net/woggioni/gbcs/api/Configuration.java

@@ -43,11 +43,20 @@ public class Configuration {
         int maxRequestSize;
     }
 
+    @Value
+    public static class Quota {
+        long calls;
+        Duration period;
+        long initialAvailableCalls;
+        long maxAvailableCalls;
+    }
+
     @Value
     public static class Group {
         @EqualsAndHashCode.Include
         String name;
         Set<Role> roles;
+        Quota quota;
     }
 
     @Value
@@ -56,7 +65,7 @@ public class Configuration {
         String name;
         String password;
         Set<Group> groups;
-
+        Quota quota;
 
         public Set<Role> getRoles() {
             return groups.stream()
@@ -75,6 +84,13 @@ public class Configuration {
         Group extract(X509Certificate cert);
     }
 
+    @Value
+    public static class Throttling {
+        KeyStore keyStore;
+        TrustStore trustStore;
+        boolean verifyClients;
+    }
+
     @Value
     public static class Tls {
         KeyStore keyStore;

gbcs-api/src/main/java/net/woggioni/gbcs/api/exception/CacheException.java

@@ -0,0 +1,11 @@
+package net.woggioni.gbcs.api.exception;
+
+public class CacheException extends GbcsException {
+    public CacheException(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    public CacheException(String message) {
+        this(message, null);
+    }
+}