String Interner Versions Save

Changed

• Update to hashbrown version 0.14.0. (https://github.com/Robbepop/string-interner/pull/58)
• Improve no_std support. (https://github.com/Robbepop/string-interner/pull/44)
• Fix bug in BufferBackend::with_capacity method. (https://github.com/Robbepop/string-interner/pull/54)

Added

• Added the new BufferBackend string interner backend.
  • This backend focuses on minimum memory consumption and allocations at the costs of decreased symbol resolution performance.
  • Use this when memory consumption is your main concern.
• Added example of how to use a different string interner backend or symbol.
• Added library docs comparing all the different string interner backends.

Changed

• The string_interner crate now uses the Rust 2021 edition.
• The DefaultBackend now is the StringBackend and no longer the BucketBackend.
• The generic S symbol parameter of all string interner backends now defaults to the DefaultSymbol.
• The Backend trait is no longer generic over a symbol S but instead has a Symbol associated type now.
• The StringInterner no longer has a generic S symbol parameter and now instead uses the Symbol associated type from its used backend B.

Dev. Note

• The memory_consumption tests now shrink the string interners before querying their memory consumption. This yields more stable numbers than before.
• The memory_consumption test now also tests the total amount of allocations and deallocations made by the string interner backends.
• Add README section about benchmarking the crate.

• Update hashbrown dependency from version 0.9 to version 0.11.

• Add shrink_to_fit method to StringInterner via backend. (#36)

• Add support more than 4G of interned strings with StringBackend. (#37)

• Remove S: Symbol trait bound from interner backends.

• Remove S: Symbol trait bound from Clone impl for StringBackend.

• Reworked the memory and allocation tests

  • Run them via cargo test -- --test-threads 1

• CI now tests the whole build for windows, linux (ubuntu) and macos.

• Add cargo-audit and cargo-outdated checks to CI pipeline.

• Remove no longer needed jemalloc dev-dependency.

• Ensure cloned StringInterner can still look up the same symbols. #34 (Thanks @alamb)
  • This requires BuildHasher: Clone trait bound for StringInterner's Clone impl.

• The BucketBackend now implements Send + Sync.
• Implemented some minor internal improvements.
• Update dependencies:
  • hashbrown 0.8 -> 0.9
  • cfg-if 0.1 -> 1.0