[servicecomb-java-chassis] 01/07: SCB-2178 Improve algorithm of loadBalance strage WeightedResponse #之前使用的策略是会一直累积计算平均响应时间，会导致出现影响速度较慢。 #通过使用时间窗口来计算平均响应时间，可以提高响应的敏感度。

[liubao]

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commit 9382d3c344b7f6b62f37f9d8e1faaa9b5812e89e
Author: zyl <2025320...@qq.com>
AuthorDate: Tue Jan 12 17:08:18 2021 +0800

    SCB-2178 Improve algorithm of loadBalance strage WeightedResponse
    #之前使用的策略是会一直累积计算平均响应时间，会导致出现影响速度较慢。
    #通过使用时间窗口来计算平均响应时间，可以提高响应的敏感度。
---
 .../apache/servicecomb/loadbalance/WeightedResponseTimeRuleExt.java    | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git 
a/handlers/handler-loadbalance/src/main/java/org/apache/servicecomb/loadbalance/WeightedResponseTimeRuleExt.java
 
b/handlers/handler-loadbalance/src/main/java/org/apache/servicecomb/loadbalance/WeightedResponseTimeRuleExt.java
index 055f75b..d96f6d4 100644
--- 
a/handlers/handler-loadbalance/src/main/java/org/apache/servicecomb/loadbalance/WeightedResponseTimeRuleExt.java
+++ 
b/handlers/handler-loadbalance/src/main/java/org/apache/servicecomb/loadbalance/WeightedResponseTimeRuleExt.java
@@ -83,7 +83,8 @@ public class WeightedResponseTimeRuleExt extends 
RoundRobinRuleExt {
     boolean needRandom = false;
     for (ServiceCombServer server : servers) {
       ServerStats serverStats = 
loadBalancer.getLoadBalancerStats().getSingleServerStat(server);
-      double avgTime = serverStats.getResponseTimeAvg();
+      //getResponseTimeAvgRecent()按照时间窗口统计，时间窗口大小为1分钟；getResponseTimeAvg()一直累积
+      double avgTime = serverStats.getResponseTimeAvgRecent();
       if (!needRandom && avgTime > MIN_GAP) {
         needRandom = true;
       }