moving main line to java 11

README.md

@@ -60,11 +60,19 @@ Sometimes you are having deal with bucket per key scenarios but distributed sync
 #### You can add Bucket4j to your project as maven dependency
 The Bucket4j is distributed through [Maven Central](http://search.maven.org/):
 ```xml
+<!-- For java 11+ -->
 <dependency>
     <groupId>com.bucket4j</groupId>
     <artifactId>bucket4j-core</artifactId>
     <version>8.0.0</version>
 </dependency>
+
+<!-- For java 8 -->
+<dependency>
+    <groupId>com.bucket4j</groupId>
+    <artifactId>bucket4j_jdk8-core</artifactId>
+    <version>8.0.0</version>
+</dependency>
 ``` 
 #### You can build Bucket4j from sources
 ```bash
@@ -81,3 +89,23 @@ Feel free to ask via:
 ## License
 Copyright 2015-2021 Vladimir Bukhtoyarov
 Licensed under the Apache Software License, Version 2.0: <http://www.apache.org/licenses/LICENSE-2.0>.
+
+## Java compatibility matrix
+Since July 2022(release 8.0.0) it was decided to migrate Bucket4j to Java 11. It can be bad news for all who get stuck on Java 8 by different reasons. We understand your pain and will provide special  builds with dedicated artifacts for java 8 for intermediate period, but keep in mind then probably access to fresh builds of Bucket4j for Java 8 can be moved to a commercial model in the future.
+
+Bellow the compatibility matrix of Bucket4j's maven artefact with different java versions
+| JAVA 11                                              |  JAVA 8                                            | Comments                |
+| :---                                                 | :---:                                              | :---:                   |
+| ```com.bucket4j:bucket4j-core```                     |  ```com.bucket4j:bucket4j_jdk8-core```             |                         |
+| ```com.bucket4j:bucket4j-jcache```                   |  ```com.bucket4j:bucket4j_jdk8-jcache```           |                         |
+| ```com.bucket4j:bucket4j-coherence```                |  ```com.bucket4j:bucket4j_jdk8-coherence```        |                         |
+| ```com.bucket4j:bucket4j-hazelcast```                |  ```com.bucket4j:bucket4j_jdk8-hazelcast```        |                         |
+| ```com.bucket4j:bucket4j-hazelcast```                |  ```com.bucket4j:bucket4j_jdk8-hazelcast```        |                         |
+| ```com.bucket4j:bucket4j-infinispan```               |  ```com.bucket4j:bucket4j_jdk8-infinispan```       |                         |
+|  Not supported                                       |  ```com.bucket4j:bucket4j_jdk8-infinispan-8```     |                         |
+| ```com.bucket4j:bucket4j-redis```                    |  ```com.bucket4j:bucket4j_jdk8-redis```            |                         |
+| ```com.bucket4j:bucket4j-mysql```                    |  ```com.bucket4j:bucket4j_jdk8-mysql```            |                         |
+| ```com.bucket4j:bucket4j-postgresql```               |  ```com.bucket4j:bucket4j_jdk8-postgresql```       |                         |
+| ```com.bucket4j:bucket4j-caffeine```                 |  ```com.bucket4j:bucket4j_jdk8-caffeine```         |                         |
+| ```com.bucket4j:bucket4j-bucket4j-dynamodb-sdk-v1``` |  ```com.bucket4j:bucket4j_jdk8-dynamodb-sdk-v1```  |                         |
+