Depends on the underlying engine in use. If you're using RocksDB, you will likely find what you're looking for on their wiki - https://github.com/facebook/rocksdb/wiki

In particular, the sections - 'Write Ahead Log', 'Write Buffer Manager', 'Compaction' and 'SST File Formats'.

Finally, I'm not sure but I think questions on deep internals of the RocksDB engine are best answered in its specific forums, where its core maintainers are most likely to lurk.

HTH

Regards,
Aditya Mukhopadhyay

On 12/03/2020 8:11 am, Harshit BHardwaj wrote:
Hi,
I wanted to know what changes occur on disk ( in journalfiles or datafiles ) when we try to update or delete .
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