Quotas and limits
The following quotas and limits apply to Knowledge Storage. To request an increase, submit a ticket or join the Tablestore technical support group 36165029092.
Knowledge base
Item | Limit |
Knowledge bases per instance | 256 |
Documents per knowledge base | 100,000,000 |
Knowledge base name length | 1–64 characters. Must start with a letter. Allows only letters, digits, and underscores (_). |
Knowledge base description length | 4 KB |
Total tag length | 4 KB |
Metadata fields | 200 |
Metadata field name length | 128 characters |
Document
Item | Limit |
Documents per AddDocuments request | 10 |
Total metadata size (key + value) | 4 KB |
Subspace name length | 128 characters |
Subspaces per ListDocuments request | 10 |
Supported document formats
Format | Limit |
200 MB, 1,500 pages | |
.doc/.docx | 200 MB |
.ppt/.pptx | 200 MB, 1,500 pages |
.xls/.xlsx | 200 MB |
.md | 4 MB |
.txt | 4 MB |
.csv | 4 MB |
.xml | 4 MB |
.json | 4 MB |
.jpeg/.png/.bmp/.webp/.gif/.tiff | Multimodal knowledge bases supported, Up to 20 MB. |
Retrieval
Item | Limit |
Query text length | 128 characters |
Subspaces per Retrieve request | 32 |
Vector search results | 100 |
Full-text search results | 100 |
Chunk update
Item | Limit |
Chunk updates per request | 10 |
Pagination
API operation | Default maxResults | Maximum maxResults |
ListKnowledgeBase | 10 | 100 |
ListDocuments | 10 | 1,000 |
ListChunks | 10 | 1,000 |