Burst capacity in DynamoDB

Introduction

Burst capacity lets your database handle sudden spikes in traffic smoothly without slowing down.

When your app gets a sudden rush of users, like during a sale or event.

If your database usually has low traffic but sometimes needs to handle big bursts.

When you want to avoid errors or delays during unexpected high demand.

To keep your app fast and reliable even if many people use it at once.

Syntax

DynamoDB

No direct syntax to set burst capacity; it is managed automatically by DynamoDB based on your provisioned throughput.

Burst capacity is a hidden feature that uses unused capacity from previous low traffic times.

It helps your table handle more requests temporarily without extra setup.

Examples

DynamoDB automatically provides burst capacity when your table has unused read or write capacity units.

DynamoDB

-- No explicit code needed for burst capacity in DynamoDB --

Sample Program

This query reads data from your DynamoDB table. If your table has burst capacity available, this read can be served faster during traffic spikes.

DynamoDB

SELECT * FROM YourDynamoDBTable WHERE UserId = '12345';

Important Notes

Burst capacity is only available if you use provisioned capacity mode, not on-demand mode.

Unused capacity units accumulate up to 5 minutes and can be used as burst capacity.

If your traffic exceeds burst capacity and provisioned throughput, requests may be throttled.

Summary

Burst capacity helps handle sudden traffic spikes smoothly.

It uses unused capacity from earlier low traffic periods.

No special code is needed; DynamoDB manages it automatically.