Sonic v1.8.0 - Breaking (use v1.8.1)

⚠️ Some RocksDB configuration keys got renamed and it turned out to be a breaking change (see #396). Use v1.8.1 instead.

Changes

• packaging(docker): Move config file to /etc/sonic/sonic.cfg (in 04a5fe6)

Improvements to search results:

• core: Implement BM25 lite (idf only) (in 0ac3e7b)
• core: Minimum term idf, to avoid low-quality results at the end of the results list (in 58cd0e4)

Bump dependencies:

• sonic-server’s dependencies:
  • Bump clap from =4.6.1 to =4.6.6
  • Bump serde from =1.0.228 to =1.0.229
• sonic_client’s dependencies:
  • Bump tokio from =1.52.3 to =1.53.1
• Fixes RUSTSEC-2024-0436, RUSTSEC-2026-0173 (unmaintained deps, not critical)

New Features

• server: Search for configuration in more locations (in 57ef691)
• server: Add experimental TRIGGER flush (in fff8bea)
• core: Add support for Unicode normalization (in 678d5e1)
• core: Add support for custom stopwords (in 764536e)
• core: Add more RocksDB configuration keys (in 8eb3045)
• bench: Add BEIR benchmark (in 9d102eb)

Bug Fixes

• server: Fix regression in sonic CLI (in 457e68d)
  • Colors, help, usage, error context and suggestions had disappeared after we set default-features = false on clap
• core: Make QUERY insensitive to Unicode normal form (in 0fd1050)
• core: Make stopwords insensitive to Unicode Normal Form (in 3f9782b)
• core: Remove numbers from stopwords (in 4e11f75)