Does Logstash cache the Query Results (JDBC-Input)

Elastic Stack Logstash
1

Hello there,

i have an important question about the processes in Logstash.

If i Query from a relational Database except 5000 entries. Does Logstash cache the 5000 an executes the filter and output like in a for-loop?

Or does Logstash get one entry, then filter, then output and next entry, then filter, then output (5000 times)?

Thanks for your help.

2

It batches, but in smaller groupings than the entire dataset.

3

Thanks =) that was important for understanding the behaviour of Logstash =)