diff --git a/gopher_tech.md b/gopher_tech.md
index 46b3982acc48ae03ac77b08bb5531a9ee94683ab..0e817af1c96b071b14f090f1898500be80faeb04 100644
--- a/gopher_tech.md
+++ b/gopher_tech.md
@@ -295,3 +295,19 @@
 | wareq        | system_iostat | gauge        |                       |      | 饱和度(rareq-sz   和 wareq-sz+响应时间) |
 | util         | system_iostat | gauge        | %                     | Y    | 磁盘使用率                              |
 
+# SLI
+
+| metrics_name | table_name    | metrics_type | unit | KPI  | metrics description              |
+| ------------ | ------------- | ------------ | ---- | ---- | -------------------------------- |
+| tgid         |               | key          |      |      | 进程ID                           |
+| ins_id       |               | key          |      |      | 实例ID                           |
+| app          |               | key          |      |      | 应用名                           |
+| method       |               | key          |      |      | 请求方法                         |
+| server_ip    |               | label        |      |      | 服务端IP                         |
+| server_port  |               | label        |      |      | 服务端端口                       |
+| client_ip    |               | label        |      |      | 客户端IP                         |
+| client_port  |               | label        |      |      | 客户端端口                       |
+| rtt_nsec     | redis_sli     | gauge        | ns   | Y    | Redis协议请求RTT                 |
+| max_rtt_nsec | redis_max_sli | gauge        | ns   | Y    | Redis协议采样周期内最大请求RTT   |
+| rtt_nsec     | pg_sli        | gauge        | ns   | Y    | Postgre协议请求RTT               |
+| max_rtt_nsec | pg_max_sli    | gauge        | ns   | Y    | Postgre协议采样周期内最大请求RTT |