增加当前节点本地定时缓存，修改部分潜在BUG，启动时Mongo或者redis无法正常连接时，进入启动等待

backend/vendor/github.com/apex/log/History.md

@@ -1,4 +1,19 @@
 
+v1.1.4 / 2020-04-22
+===================
+
+  * add apexlogs HTTPClient support
+
+v1.1.3 / 2020-04-22
+===================
+
+  * add events len check before flushing to apexlogs handler
+
+v1.1.2 / 2020-01-29
+===================
+
+  * refactor apexlogs handler to use github.com/apex/logs client
+
 v1.1.1 / 2019-06-24
 ===================
 

backend/vendor/github.com/apex/log/go.mod

@@ -3,6 +3,7 @@ module github.com/apex/log
 go 1.12
 
 require (
+	github.com/apex/logs v0.0.4
 	github.com/aphistic/golf v0.0.0-20180712155816-02c07f170c5a
 	github.com/aphistic/sweet v0.2.0 // indirect
 	github.com/aws/aws-sdk-go v1.20.6

backend/vendor/github.com/apex/log/go.sum

@@ -1,3 +1,5 @@
+github.com/apex/logs v0.0.4 h1:KmEBVwfDUOTFcBO8cfkJYwdQ5487UZSN+GteOGPmiro=
+github.com/apex/logs v0.0.4/go.mod h1:XzxuLZ5myVHDy9SAmYpamKKRNApGj54PfYLcFrXqDwo=
 github.com/aphistic/golf v0.0.0-20180712155816-02c07f170c5a h1:2KLQMJ8msqoPHIPDufkxVcoTtcmE5+1sL9950m4R9Pk=
 github.com/aphistic/golf v0.0.0-20180712155816-02c07f170c5a/go.mod h1:3NqKYiepwy8kCu4PNA+aP7WUV72eXWJeP9/r3/K9aLE=
 github.com/aphistic/sweet v0.2.0 h1:I4z+fAUqvKfvZV/CHi5dV0QuwbmIvYYFDjG0Ss5QpAs=