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Release Notes
Release notes and compatibility changes for DolphinDB server, plugins and APIs
API & Connector
C# API
1.30.21.1

Deployment
Deploy and upgrade DolphinDB on premise or in the cloud
Database
Design and configure DolphinDB databases
Streaming
Publish, subscribe to, and process streaming data
Migration
Import and migrate data from various data sources to DolphinDB databases
Maintenance
Database maintenance and system management
Programming Guide
DolphinDB scripting language and SQL reference
Function References
Reference for all built-in functions
API & Connector
API in different languages for users to call DolphinDB from their programs
Plugins
Guidance on the use of plugins and plugin development for multiple application scenarios
Tutorials
Tutorials on database concepts and application scenarios
Release Notes
Release notes and compatibility changes for DolphinDB server, plugins and APIs

1.30.21.1

New Features

Added new method runAsyncto class DBConnection.
Added callback method callbackHandler to MultithreadedTableWriter.
Added new class AutoFitTableUpsert.
The write mode of method MultithreadedTableWriter can now be upsert.
Subscribed data can be pushed through the connection established by the API subscriber.
Added support for downloading data using the Apache Arrow format.