Momento Cache service quotas
Service quotas are directly affected by the support plan on your account. Both soft and hard limits are increasable for the Pro tier and Enterprise plans. If you would like to request an increase, please contact sales.
Limits
| Resource | Entity | Default | Basic support | Pro support |
|---|---|---|---|---|
| Soft limits | ||||
| Namespace count | region | 3 | 30 | 300 |
| Operations per second | namespace | 100 | 1,000 | 10,000 |
| Hot storage | namespace | 100 MB | 1 GB | 10 GB |
| Hard limits | ||||
| Time to live (TTL) | item | 24 hours | ||
| Item size | item | 5 MB | ||
| Collection element size | element | 128 KB | ||
| Operations per second (control APIs) | region | 5 | ||
Operations
Certain cache APIs can perform multiple operations in a single request. Multi-element operations are more efficient, so the cost of these APIs is discounted at a 2:1 ratio. This means every two elements will count as one operation towards the limiter.
To further reduce the number of operations charged against your account, look into setting the read concern header to Express. This will reduce the charged operations count to 0.8x the default value, and will reduce latencies for frequently accessed keys.
As an example, a SetAddElements request adding one or two elements costs one operation, but with three or four elements it costs two operations, and so on. All the APIs listed below perform multiple operations and are subject to reduced cost. All unlisted APIs cost one operation.
| API Name | Operations |
|---|---|
| DictionaryFetch | Number of fields in response / 2, or 1 if dictionary is not found |
| DictionaryGetFields | Number of fields in request / 2 |
| DictionaryRemoveFields | Number of fields in request / 2 |
| DictionarySetFields | Number of fields in request / 2 |
| KeysExist | Number of keys in request / 2 |
| ListConcatenateBack | Number of elements in request / 2 |
| ListConcatenateFront | Number of elements in request / 2 |
| ListFetch | Number of elements in response / 2, or 1 if list is not found |
| SetAddElements | Number of elements in request / 2 |
| SetContainsElements | Number of elements in request / 2 |
| SetFetch | Number of elements in response / 2, or 1 if set is not found |
| SetRemoveElements | Number of elements in request/2 |
| SortedSetFetchByRank | Number of elements in response / 2, or 1 if sorted set is not found |
| SortedSetFetchByScore | Number of elements in response / 2, or 1 if sorted set is not found |
| SortedSetGetScores | Number of elements in request / 2 |
| SortedSetPutElements | Number of elements in request / 2 |
| SortedSetRemoveElements | Number of elements in request / 2 |