[skip ci]Add comments in appendix_a_basic_components.md (#11762)

Signed-off-by: ruiyi.jiang <ruiyi.jiang@zilliz.com>
2021-11-15 09:17:13 +08:00 · 2021-11-15 09:17:13 +08:00 · 920453b840
parent 39cc7839a0
commit 920453b840
1 changed files with 1 additions and 0 deletions
--- a/docs/developer_guides/appendix_a_basic_components.md
+++ b/docs/developer_guides/appendix_a_basic_components.md
@ -443,6 +443,7 @@ type MetaKv interface {
 ###### A.7.4 MetaKv

 ```go
+// SnapShotKV is TxnKV for snapshot data. It must save timestamp.
 type SnapShotKV interface {
 	Save(key string, value string, ts typeutil.Timestamp) error
 	Load(key string, ts typeutil.Timestamp) (string, error)