Release v0.2.0

Release v0.2.0

Key Changes

• Performance: Replaced RwLock/Mutex with lock-free ArcShift and actor patterns; optimized hot-path with SIMD verification.
• SDK: Added sof-tx reliability profiles (LowLatency, Balanced, HighReliability) and PluginHostTxProviderAdapter.
• Quality: 9+ new fuzz targets (FEC, reassembly, wire) and automated CI smoke testing.
• CI: Enabled incremental builds and shared caching to reduce developer feedback latency.
• Architecture: Isolated runloop and PluginHost modules; expanded plugin hooks for topology and leader schedules.

Changelog

• perf: Lock-free state management and SIMD verification.
• feat: SDK reliability presets and observer-to-SDK adapter.
• feat: Expanded fuzzing infrastructure and CI smoke suite.
• refactor: decupled orchestration from host logic; expanded plugin hooks.
• chore: Incremental CI builds and multi-crate release automation.

v0.1.0

SOF v0.1.0

Initial public release of SOF (Solana Observer Framework).

SOF is a lightweight observer runtime for low-latency shred ingestion, dataset reconstruction, transaction extraction, and plugin-driven extensions.

Highlights

• Async plugin framework with hot-path protection:
  • non-blocking enqueue
  • bounded event queue
  • sampled drop warnings under pressure
• Plugin dispatch strategies:
  • PluginDispatchMode::Sequential
  • PluginDispatchMode::BoundedConcurrent(N)
• Expanded hook surface (7 hooks total):
  • on_raw_packet
  • on_shred
  • on_dataset
  • on_transaction
  • on_recent_blockhash
  • on_cluster_topology (gossip mode)
  • on_leader_schedule (event-driven, gossip mode)
• Global observed state accessors on PluginHost:
  • latest_observed_recent_blockhash()
  • latest_observed_tpu_leader()
• Control-plane-only mode support:
  • SOF_LIVE_SHREDS_ENABLED=false

Runtime and Examples

• Runtime example quick starts are now cleaner and env-light.
• Added/updated plugin examples, including TPU leader logging:
  • tpu_leader_logger
  • observer_with_non_vote_plugin
  • observer_with_multiple_plugins
  • non_vote_tx_logger
  • raydium_contract