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同時参加時の競合状態を検証するためのテストを追加。 現状では競合状態により一部の参加者が失われることを確認。 Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- 3つに分離していたatomic操作を単一のatomic操作に統合 - versionstampチェックによる楽観的ロックを実装 - 競合発生時は最大3回までリトライ - 複数インスタンス環境での同時参加時に参加者が失われる問題を修正 Fixes #32 Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
sendCurrentRoomState関数のテストを追加: - Room情報を正しく送信することを確認 - userTokenがnullの場合は送信しないことを確認 Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- sendCurrentRoomState関数を追加 - auth完了時に即座にKVから最新Room情報を取得して送信 - REST APIレスポンスとKV更新のタイミングの差異を解消 Fixes #32 Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- MAX_RETRIESをJOIN_ROOM_MAX_RETRIESとしてファイル先頭に定数化 - userToken初期化をnull合体演算子で簡潔化 - userTokenInfo生成ロジックを単一のオブジェクト生成に統合 Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- リトライ回数を3→5に増加 - 指数バックオフ: 10ms, 20ms, 40ms, 80ms, 160ms - ジッター: ランダムな揺らぎで同時リトライを回避 - 高負荷時の連続競合を軽減 Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- fetchWithRetry: 503エラー時に指数バックオフでリトライ（最大2回） - joinRoomApiでリトライ機能を使用 - エラーメッセージを改善（再読み込みを促す） Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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Summary
Test plan
deno test backend/- 59テストすべてパスFixes #32
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