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emqx/changes/ce/feat-10404.en.md
Thales Macedo Garitezi 14ed4a7ada feat(buffer_worker): set default queue mode to memory_only 
Fixes https://emqx.atlassian.net/browse/EMQX-9367

For better user experience and performance for the average bridge, we
should change the default queue mode to `memory_only`, as was the
behavior of most bridges in e4.x.  This leads to better performance
when message rate is high enough and the remote resource is not
keeping up with EMQX.

Also, we set the default segment size to equal max queue bytes.
2023-04-14 11:37:19 -03:00

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Change the default queue mode for buffer workers to memory_only. Before this change, the default queue mode was volatile_offload. When under high message rate pressure and when the resource is not keeping up with such rate, the buffer performance degraded a lot due to the constant disk operations.