Sub2API v1.0 - AI API 网关（二开初始版本，基于上游 Wei-Shaw/sub2api）

2026-08-21 18:30:13 +08:00
commit 6d655c9903
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+-- 窄表账务幂等键：将“是否已扣费”从 usage_logs 解耦出来
+-- 幂等执行：可重复运行
+
+CREATE TABLE IF NOT EXISTS usage_billing_dedup (
+    id BIGSERIAL PRIMARY KEY,
+    request_id VARCHAR(255) NOT NULL,
+    api_key_id BIGINT NOT NULL,
+    request_fingerprint VARCHAR(64) NOT NULL,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);
+
+CREATE UNIQUE INDEX IF NOT EXISTS idx_usage_billing_dedup_request_api_key
+    ON usage_billing_dedup (request_id, api_key_id);