---
# System prepended metadata

title: Untitled

---

```mermaid
gantt
    title master branch without follower read
    dateFormat MM-DD
    axisFormat  
    section TiDB
    Get Start TS  (1 RTT)          :active, ha, 10-01, 10-10
    Leader Read (1 RTT)     :active, ha2, 10-11, 10-20
```

```mermaid
gantt
    title master branch with follower read
    dateFormat MM-DD
    axisFormat  
    section TiDB
    Get Start TS (1 RTT)          :active, ha, 10-01, 10-10
	section TiKV
    Read Index (1 RTT)     :active, ha2, 10-11, 10-20
	Follower Read  (0 RTT)  :active, ha3, 10-20, 10-21
```

```mermaid
gantt
    title our branch with concurrent optimize
	axisFormat  
    dateFormat MM-DD

	section TiDB
	Send Request to DcProxy :active, ha5, 10-00, 10-01

    section DcProxy
    Get Start TS (1 RTT)          :active, ha, 10-01, 10-10
    Read Index (1 RTT)     :active, ha2, 10-01, 10-10
	Follower Read  (0 RTT)  :active, ha3, 10-10, 10-11
	Optimized :crit, ha4, 10-11, 10-21
```
