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HydraCache 0.50.0

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@github-actions github-actions released this 13 Jul 15:40
· 1195 commits to main since this release
v0.50.0
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HydraCache 0.50.0

0.50.0 adds the interactive cluster simulator demo: a seed-reproducible browser
experience built on the 0.44 hydracache-sim engine. The demo lets users
partition, heal, crash, and restart simulated nodes while watching leader/term
state, committed-log agreement, consistency outcomes, convergence, and the real
invariant-checker verdict.

This is a DevRel and onboarding artifact. It does not replace the deterministic
simulation testing gate, and it does not add production cluster behavior.

Highlights

  • Added hydracache-sim-wasm browser bindings over the simulator engine.
  • Added a stable SimSnapshot JSON schema for browser rendering and shared
    replay state.
  • Added the static web UI for topology controls, node/link state, invariant
    verdicts, seed replay, and scenario presets.
  • Added seed sharing so a demo run can be reproduced by URL or copied seed.
  • Added curated presets for normal convergence and honest failure scenarios.
  • Added guardrails so the UI displays simulator verdicts rather than painting a
    synthetic green state.
  • Added an optional sandbox-backed /sim/* route path for server-driven demos.
  • Closed pre-0.50 documentation debt around COMPAT entries, dangling plan links,
    ADR numbering, and deferred technical-debt homes.

Verification

Focused gates:

cargo xtask doc-check
cargo test -p xtask --locked
cargo test -p hydracache-sim --locked snapshot_schema
cargo test -p hydracache-sim --locked scenarios
cargo test -p hydracache-sim --locked demo_scenarios_match
cargo test -p hydracache-sandbox --locked sim_routes

Full gate:

cargo xtask verify

The browser/WASM smoke and static-site packaging run as the DevRel tier outside
the core cargo xtask verify path.

Scope Boundary

The simulator demo is a truthful teaching surface over the deterministic model,
not a production operator console or a correctness gate. The authoritative gate
remains the simulator/VOPR test stack and cargo xtask verify.

Release Status

Published as 0.50.0 after the simulator, doc-check, and demo packaging gates.

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