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Service Limits for Momento Cache and Momento Topics

Momento Cache and Momento Topics seek to protect themselves and their customers when it comes to service resources. To do this, every account, cache, and topic has service limits, or what we call "guardrails" (like a curvy mountain road) to help keep operations running how they should and as smoothly as possible. This page outlines the default service limits:

Momento Cache limitsValue
API rate per cache (data plane)100 requests/s
API rate per customer (control plane)5 requests/s
Throughput per cache1MB/s
Maximum item size1MB
Max cache count (per account)10
Time to live (TTL)1 day
Per collection (CDT) element size limit128KB
Permissions per API key or token (hard limit)10
Momento Topics limitsValue
Subscribers per cache100
Message size4KiB per published message
Throughput per cache10 publish requests/sec

As Momento Topics utilizes Momento Cache, all Cache limits apply to Topics as well.

Soft limits and support

The limits on this page are soft limits that can be altered unless specifically denoted. If you need limits adjusted, please reach out to Momento Support. Please include your login email, the name of the cache(s) to be altered, the cloud+region the cache is located in (e.g. AWS eu-west-1), and which limits from the list you’d like increased.