Limits

This page lists out some known limitations that the users may encounter when using Zilliz Cloud.

Zilliz Cloud platform

This section lists out the limitations of Zilliz Cloud platform.

Zilliz Cloud account password

  • Length: 8 to 128 characters.
  • Components: Upper case letters, lower case letters, numbers, and special characters.
  • Special characters: ~, !, @, #, $, %, ^, &, *, ?, _, and -.

Project name

  • Length: 1 to 64 characters.
  • Components: Upper case letters, lower case letters, numbers, or special characters.

Database name

  • Length: 1 to 32 characters.
  • Components: Upper case letters, lower case letters, numbers, or special character -.

Database username

  • Length: 2 to 32 characters.
  • Components: Lower case letters, numbers, or special character _.
  • Starts with letter, and ends with letter or number.
  • Database-level unique.

Database user password

  • Length: 8 to 64 characters.
  • Components: Upper case letters, lower case letters, numbers, and special characters.
  • Special characters: !, @, #, $, %, ^, &, *, (, ), _, +, - and =.

Zilliz Cloud database

This section lists out the limitations of Zilliz Cloud database.

Length of a resource name

ResourceLimit
Collection255 characters
Field255 characters
Index255 characters
Partition255 characters

Naming rules

The name of a resource can contain numbers, letters, dollar signs ($), and underscores (_). A resource name must start with a letter or an underscore (_).

Number of resources

ResourceLimit
Collection65,536
Connection / proxy65,536

Number of resources in a collection

ResourceLimit
Partition4,096
Shard256
Field256
Index1
Entityunlimited

Length of a string

Data typeLimit
VARCHAR65,535 characters

Dimensions of a vector

PropertyLimit
Dimension32,768

Input and Output per RPC

OperationRecommended
InsertLess than 128 MB
SearchLess than 128 MB
QueryLess than 128 MB
VectorsRecommended
topk (number of the most similar results to return)10,000
nq (number of the search requests)10,000