### What problem does this PR solve?

Fix ragflow may encounter an OOM (Out Of Memory) when there are a lot of
conversations.
#1288

### Type of change

- [ ] Bug Fix (non-breaking change which fixes an issue)

Co-authored-by: zhuhao <zhuhao@linklogis.com>

### What problem does this PR solve?

#1243 
### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

### What problem does this PR solve?

bix fix

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

### What problem does this PR solve?

#1069 

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

### What problem does this PR solve?


### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

### What problem does this PR solve?

#1024 

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

### What problem does this PR solve?

issue #991

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

---------

Co-authored-by: KevinHuSh <kevinhu.sh@gmail.com>

### What problem does this PR solve?

#994 
#991 

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

### What problem does this PR solve?


### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)

### What problem does this PR solve?

#724 #162

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)
- [x] New Feature (non-breaking change which adds functionality)

### What problem does this PR solve?

feat: add rerank models to the project #724 #162

### Type of change

- [x] New Feature (non-breaking change which adds functionality)