In order to make your issue reports as actionable as possible, please provide the following information, depending on the issue type.

Bug report

For bug reports, provide this information, please:

What Debezium connector do you use and what version?

2.5

What is the connector configuration?

Postgres 

What is the captured database version and mode of depoyment?

Local

What behaviour do you expect?

Debezium not putting Redis in OOM mode

What behaviour do you see?

Debezium putting Redis in OOM mode

Do you see the same behaviour using the latest relesead Debezium version?

Yes

Do you have the connector logs, ideally from start till finish?

RDI fails with exception:
redis.exceptions.OutOfMemoryError: command not allowed when used memory > 'maxmemory'.

How to reproduce the issue using our tutorial deployment?

Run Debezium with a big table. 

Feature request or enhancement

For feature requests or enhancements, provide this information, please:

Which use case/requirement will be addressed by the proposed feature?

<Your answer>

Implementation ideas (optional)

Add memory check not only to current memory usage but also consider amount of memory that going to be used in a next batch