v0.3.0

0.3.0

Breaking changes

• Locker::acquire and Locker::acquire_with_options now take the keys by
  value (K: ToRedisArgs) instead of &K, and borrow the locker (&self).
  This makes locker.acquire("key") and locker.acquire(&["a", "b"]) work as
  documented. The Clone + Send + 'static bounds are gone.
• Lock::release is now async and awaits the reply from Redis. It reuses the
  shared connection manager instead of opening a new TCP connection.
• The public API returns async_redis_lock::Result<T> (thiserror based)
  instead of anyhow::Result<T>.
• The internal execs module is no longer public.

Added

• Lock::is_lost() to detect that the lock expired or was taken over.
• Locker::from_client() for dependency injection and custom clients.
• Validation of Options and of the key list (Error::InvalidOptions,
  Error::NoKeys).
• #[must_use] on Lock and the acquire methods.
• Integration tests in tests/lock.rs, configurable through REDIS_URL.
• CI workflow running the test suite against a Redis service.

Fixed

• README and crate-level doctest examples now compile (cargo test is green).
• Dropping a Lock no longer blocks the async runtime; the release is
  scheduled on the current runtime with a sync fallback outside of a runtime.
• Multi-key release deletes the keys that are still owned by the lock instead
  of leaving them behind when one key was lost.
• Acquisition timeouts use a monotonic clock and no longer overshoot the
  configured timeout by a full retry interval.
• Zero TTL, zero retry/extension intervals and empty key lists are rejected
  before contacting Redis.

Documentation

• Reworked the README into a guide with an architecture overview, API table,
  guarantees and limitations, error-handling examples and an FAQ.
• Added runnable examples in examples/basic.rs and
  examples/custom_options.rs.
• CI now builds the documentation with warnings denied.

Changed

• Upgraded dependencies to their latest versions: tokio 1.53.3, redis 1.7.1,
  uuid 1.28.0, thiserror 2.0.21. The minimum supported Rust version is now
  1.89.
• Adapted to the redis 1.x ConnectionManagerConfig::set_max_delay API, which
  now takes a std::time::Duration.
• Trimmed the tokio feature set used by the library.
• Enforced rustfmt formatting and clippy -D warnings in CI.
• README documents the single-instance, failover, eviction and fencing