SOFAStack Message Queue limits and values-Scalable Open Financial Architecture(SOFAStack)-阿里云帮助中心

SOFAStack Message Queue sets limits on certain metrics. To prevent errors in your program, you must stay within these limits.

The following table lists the limits and their corresponding values.

Limit	Limit	Description
Topic name length	64 characters	Exceeding this limit prevents you from sending messages to or subscribing to the topic.
Message size	Normal and ordered messages: 4 MB Transaction, scheduled, and delayed messages: 4 MB	Messages that exceed the size limit for their type are discarded.
Message retention period	3 days	Messages are stored for a maximum of 3 days. Older messages are automatically deleted.
Consumer offset reset	3 days	You can reset the consumer offset to consume messages from any point in time within the last 3 days.
TPS for a single instance	4000 TPS Note Transactions Per Second (TPS) is calculated as the sum of messages sent and received, based on a message size of 1 KB.	For a higher TPS limit, submit a ticket.
Delay duration for scheduled and delayed messages	3 days	The maximum delay is 3 days by default. Messages with a longer delay will fail to send. Set the message delay time using the `msg.setStartDeliverTime` parameter. The unit is milliseconds.