Application Auto Scaling automatically scales the provisioned capacity only when the consumed capacity is higher than target utilization for two consistent minutes. Application Auto Scaling initiates a scale up only when two consecutive data points for consumed capacity units exceed the configured target utilization value within a one-minute span. You activated AWS Application Auto Scaling, but your table is still being throttledĪWS Application Auto Scaling isn't a suitable solution to address sudden spikes in traffic with DynamoDB tables. With the burst capacity feature, DynamoDB reserves a portion of the unused capacity for later bursts of throughput to handle usage spikes. Note: DynamoDB doesn't necessarily start throttling the table after the consumed capacity per second exceeds the provisioned capacity. For more information, see Error retries and exponential backoff. If you are using the AWS SDK, then this logic is implemented by default. To resolve this issue, make sure that your table has enough capacity to serve your traffic and retry throttled requests using exponential backoff. However, if all the workload falls within a couple of seconds, then the requests might be throttled. The total number of read capacity units or write capacity units per minute might be lower than the provisioned throughput for the table. However, driving all 3600 requests in one second with no requests for the rest of that minute might result in throttling. For example, if you provisioned 60 write capacity units for your DynamoDB table, then you can perform 3600 writes in one minute. However, the DynamoDB rate limits are applied per second. The metrics are calculated as the sum for a minute and then averaged. Your DynamoDB table has adequate provisioned capacity, but most of the requests are being throttledĭynamoDB reports minute-level metrics to Amazon CloudWatch. Use one or more of the following troubleshooting options based on your use case. These metrics might help you to locate the operations creating throttled requests and identify the cause for throttling.
Your table's traffic is exceeding your account throughput quotas.įor information on DynamoDB metrics that must be monitored during throttling events, see DynamoDB metrics and dimensions.You have a hot partition in your table.Your DynamoDB table is in on-demand capacity mode, but the table is being throttled.You activated AWS Application Auto Scaling for DynamoDB, but your DynamoDB table is being throttled.Your DynamoDB table has adequate provisioned capacity, but most of the requests are being throttled.Here are some of the common throttling issues that you might face:
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