block - Remove documents matching the predicate
The block keyword filters out all events where the given predicate is true. This is the functional inverse of filter, which will only allow events where the predicate is true.
Syntax
Example - Blocking all healthy status codes
In this example, we have a document with a field status_code which represents a HTTP status response code. We're interested only in those values outside of the happy path, including redirects. This means removing any status code beginning with 2. We can do this using the startsWith string function and the block keyword.
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