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cad112bb1c
* Remove from_iter_instead_of_collect from workspace lints The lint was removed from clippy (beta) and now triggers renamed_and_removed_lints warnings in every crate. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> * Fix clippy::chunks_exact_to_as_chunks Replace chunks_exact with a constant chunk size by as_chunks. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> * Fix clippy::needless_late_init Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> * Fix clippy::useless_borrows_in_formatting Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> * Fix clippy::uninlined_format_args Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> * Fix clippy::for_kv_map Iterate map values directly instead of discarding keys. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> * Allow clippy::result_large_err on QueueProxyShard::new_from_version The Err variant intentionally hands the LocalShard back to the caller. Same pattern as the existing allow on ForwardProxyShard::new. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> * Allow clippy::result_unit_err on wait_for_consensus_commit Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> --------- Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
gridstore
New storage for variable-sized values using mmap.
Design
- IDs are sequential integers, starting at 0.
- The storage is divided into file pages of fixed size (32MB).
- Data can be written and read across multiple pages.
- Those pages are mapped into memory using mmap.
- Data units are blocks of fixed size (128 bytes).
- Values span an integer number of contiguous blocks.
- Values are compressed with lz4
- Each block is mapped to a bit in the bitmask.
- A region is a fixed number of contiguous blocks.
- Gaps of free blocks in each region are tracked in a file.
- Deletes mark the block as deleted (in-memory) & updates their region
- Updates:
- not done in place, always a new value is inserted
- calculation of the new regions gaps is done on the fly
- the tracker is updated in-memory, only persisted on flush
- Supports multiple threads reading and single thread writing
- One file per page, one file for tracker, one file for bitmask, and one file for gaps.
TODOs
- dictionary compression to optimize payload key repetition
- validate the usage with a block storage via HTTP range requests