Hangfire compatibility acceptance

Run Hangfire.Redis.StackExchange 1.12.0 on Respire by injecting the StackExchange.Redis adapter into RedisStorage. Tested against real Redis on .NET 8 and .NET 10 with RESP2 and RESP3 (package commit da8e39a).

dotnet add package Respire.StackExchangeCompat

using Respire.StackExchangeCompat;

// options is your RespireOptions, for example RespireOptions.Parse("localhost:6379").
await using var multiplexer = RespireConnectionMultiplexer.Create(options);
var storage = new Hangfire.Redis.StackExchange.RedisStorage(multiplexer,
    new Hangfire.Redis.StackExchange.RedisStorageOptions
    {
        Db = options.Database,
        UseTransactions = true,
    });

• Keep the multiplexer alive until Hangfire workers and storage operations finish. Hangfire borrows it; the adapter owns its native clients.
• Pass the multiplexer, not a connection string. A connection string makes RedisStorage create StackExchange.Redis instead.

What is tested

tests/Respire.Hangfire.Acceptance.Tests ports 93 of the 96 active upstream tests, plus two worker lifecycle tests.

Upstream class	Facts exercised
RedisConnectionFacts	18
RedisWriteOnlyTransactionFacts	25
RedisFetchedJobFacts	16
RedisLockFacts	4
FetchedJobsWatcherFacts	7
ExpiredJobsWatcherFacts	5
RedisSubscriptionFacts	3
RedisStorageFacts	1
RedisStorageOptionsFacts	1
RedisTest	1
DeletedStateHandlerFacts	3
FailedStateHandlerFacts	3
ProcessingStateHandlerFacts	3
SucceededStateHandlerFacts	3

• Transaction, fetched-job, watcher, and lock tests run on Redis. Argument-validation and state-handler tests use upstream mocks, so they do not prove Redis behavior.
• The worker lifecycle tests run a real BackgroundJobServer with UseTransactions both true and false: enqueue, execute, check the succeeded state, and shut down.
• The source notice lists each method, adaptation, and the upstream LGPLv3 notices.

Excluded:

• DbFromConnectionStringIsUsed, PasswordFromToStringIsNotShown, and PasswordFromWriteOptionsToLogIsNotShown use string constructors that create StackExchange.Redis, so they cannot test the adapter.
• AcquireFromNestedTask is disabled upstream (the package uses thread-local lock ownership).
• The upstream expired-job deletion test writes the misspelled key succeded, so it does not prove cleanup of the succeeded list.

Limitations

• Supported members are listed in the migration guide. Unsupported members and flags throw NotSupportedException.
• Not covered: other Hangfire package versions, Redis Cluster or Sentinel, every dashboard query, every Hangfire feature, and general StackExchange.Redis parity.
• ListRightPop, HashExists, SortedSetRank, SetContains, and newer StringSet overloads appear only in upstream test setup and are not part of the supported surface unless the migration guide lists them.