dubbo-cluster/src/main/java/org/apache/dubbo/rpc/cluster/loadbalance/
ConsistentHashLoadBalance.java
![image](https://user-images.githubusercontent.com/30815149/55045041-740f4980-5077-11e9-8b6c-7a2b18b0d58e.png)
我看其他地方都是用Constants进行替换，这里是不是可以使用Constants类里的属性进行替换
public static final String REGISTRY_SEPARATOR = "|";
    public static final Pattern REGISTRY_SPLIT_PATTERN = Pattern
            .compile("\\s*[|;]+\\s*");
    public static final String SEMICOLON_SEPARATOR = ";";
    public static final Pattern SEMICOLON_SPLIT_PATTERN = Pattern
            .compile("\\s*[;]+\\s*");
    public static final String CONNECT_QUEUE_CAPACITY = "connect.queue.capacity";
    public static final String CONNECT_QUEUE_WARNING_SIZE = "connect.queue.warning.size";
    public static final int DEFAULT_CONNECT_QUEUE_WARNING_SIZE = 1000;
    public static final String CHANNEL_ATTRIBUTE_READONLY_KEY = "channel.readonly";
    public static final String CHANNEL_READONLYEVENT_SENT_KEY = "channel.readonly.sent";
    public static final String CHANNEL_SEND_READONLYEVENT_KEY = "channel.readonly.send";
    public static final String COUNT_PROTOCOL = "count";
    public static final String TRACE_PROTOCOL = "trace";
    public static final String EMPTY_PROTOCOL = "empty";
    public static final String ADMIN_PROTOCOL = "admin";
    public static final String PROVIDER_PROTOCOL = "provider";
    public static final String CONSUMER_PROTOCOL = "consumer";
    public static final String ROUTE_PROTOCOL = "route";
    public static final String SCRIPT_PROTOCOL = "script";
    public static final String CONDITION_PROTOCOL = "condition";
    public static final String MOCK_PROTOCOL = "mock";
    public static final String RETURN_PREFIX = "return ";
    public static final String THROW_PREFIX = "throw";
    public static final String FAIL_PREFIX = "fail:";
    public static final String FORCE_PREFIX = "force:";
    public static final String FORCE_KEY = "force";
    public static final String MERGER_KEY = "merger";
    /**
     * simple the registry for provider.