Platform limits

Ingestion limits

Event size

The maximum size of a single event is 32MB.

Query engine limits

Below are some limits related to Devo’s query engine. Note that whenever any of these limits are reached, the query is cancelled and a error 109 is returned.

Regex maximum steps

There is a limit based on the number of steps that are required to solve the regex. This limit is calculated using a complex formula and is a function of the string size.

Maximum memory usage

There is a limit in the amount of memory that can be used to calculate aggregations. This limit depends on the number of concurrent queries running at the same time in the platform.

Subqueries memory limit

Subqueries are limited in three different ways:

Max memory

• 32 KB for a single subquery

• 64 KB for all subqueries

CPU

10 minutes CPU time

Execution time

The maximum time to run a subquery before finalising is 20 minutes.

Collect operations limit

100,000 elements for collect, collectSorted, collectDistinct and the percentile operations.

Limit of backend processes that run queries against the query engine

To avoid a potential uncontrolled creation of backend processes, Devo has the following default limits:

• A domain can create a maximum of 300 alert definitions