docs: 补全基础设施文档 (DB设计/API规范/MiMoCode配置)
- 03-数据库设计.md: ER图 + 12张表定义 + Redis数据结构 + Migration策略 - 04-API接口规范.md: OpenAPI 3.0 约定 + 全部接口定义 (Auth/APIKey/LLM/Billing/Registry/Skills/IM/Admin) - 05-AGENTS-MiMoCode配置.md: MiMo Code 核心配置文件，包含项目结构/技术栈/开发规范/模块说明 至此 docs/ 目录包含完整的6份基础设计文档，可作为 MiMo Code 的上下文输入
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# AI PaaS 商业平台 — 数据库设计
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> 版本: 1.0 | 日期: 2026-06-27
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> 数据库: PostgreSQL 16+ | 缓存: Redis 7+
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---
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## 1. ER 关系图
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```
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tenants ──1:N──→ users
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tenants ──1:N──→ capabilities
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tenants ──1:N──→ subscriptions
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tenants ──1:N──→ credit_transactions
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tenants ──1:N──→ token_usage
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tenants ──1:N──→ skills
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tenants ──1:N──→ im_sessions
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users ──1:N──→ api_keys
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users ──1:N──→ skill_purchases
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capabilities ──1:N──→ capability_versions
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skills ──1:N──→ skill_purchases
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im_sessions ──1:N──→ im_messages
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```
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---
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## 2. 表定义
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### 2.1 tenants（租户）
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```sql
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CREATE TABLE tenants (
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id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
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name VARCHAR(255) NOT NULL,
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slug VARCHAR(100) NOT NULL UNIQUE, -- URL 友好标识
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plan VARCHAR(20) NOT NULL DEFAULT 'free', -- free/pro/team/enterprise
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credit_balance BIGINT NOT NULL DEFAULT 0, -- 毫 Credit (1 Credit = 1000)
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credit_included BIGINT NOT NULL DEFAULT 100000, -- 月包含 Credit (毫)
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credit_used BIGINT NOT NULL DEFAULT 0, -- 本月已用 (毫)
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status VARCHAR(20) NOT NULL DEFAULT 'active', -- active/suspended/deleted
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settings JSONB DEFAULT '{}', -- 租户配置
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created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
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updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
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);
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CREATE INDEX idx_tenants_slug ON tenants(slug);
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CREATE INDEX idx_tenants_status ON tenants(status);
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-- RLS
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ALTER TABLE tenants ENABLE ROW LEVEL SECURITY;
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CREATE POLICY tenant_isolation ON tenants
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USING (id = current_setting('app.tenant_id')::uuid);
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```
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### 2.2 users（用户）
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```sql
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CREATE TABLE users (
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id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
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tenant_id UUID NOT NULL REFERENCES tenants(id) ON DELETE CASCADE,
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email VARCHAR(255) NOT NULL,
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password_hash VARCHAR(255), -- Keycloak 管理时可为空
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name VARCHAR(255) NOT NULL,
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role VARCHAR(20) NOT NULL DEFAULT 'user', -- owner/admin/developer/user
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avatar_url VARCHAR(500),
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status VARCHAR(20) NOT NULL DEFAULT 'active', -- active/suspended/deleted
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last_login_at TIMESTAMP WITH TIME ZONE,
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created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
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updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
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UNIQUE(tenant_id, email)
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);
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CREATE INDEX idx_users_tenant ON users(tenant_id);
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CREATE INDEX idx_users_email ON users(email);
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CREATE INDEX idx_users_role ON users(role);
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ALTER TABLE users ENABLE ROW LEVEL SECURITY;
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CREATE POLICY tenant_isolation ON users
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USING (tenant_id = current_setting('app.tenant_id')::uuid);
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```
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### 2.3 api_keys（API 密钥）
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```sql
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CREATE TABLE api_keys (
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id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
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tenant_id UUID NOT NULL REFERENCES tenants(id) ON DELETE CASCADE,
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user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
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name VARCHAR(255) NOT NULL, -- 用途标识
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key_hash VARCHAR(64) NOT NULL UNIQUE, -- SHA-256 哈希
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key_prefix VARCHAR(10) NOT NULL, -- 前缀 aip_xxxx
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scopes TEXT[] DEFAULT '{}', -- 权限范围
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last_used_at TIMESTAMP WITH TIME ZONE,
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expires_at TIMESTAMP WITH TIME ZONE, -- 可选过期时间
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status VARCHAR(20) NOT NULL DEFAULT 'active', -- active/revoked
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created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
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);
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CREATE INDEX idx_api_keys_tenant ON api_keys(tenant_id);
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CREATE INDEX idx_api_keys_hash ON api_keys(key_hash);
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CREATE INDEX idx_api_keys_user ON api_keys(user_id);
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ALTER TABLE api_keys ENABLE ROW LEVEL SECURITY;
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CREATE POLICY tenant_isolation ON api_keys
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USING (tenant_id = current_setting('app.tenant_id')::uuid);
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```
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### 2.4 subscriptions（订阅）
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```sql
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CREATE TABLE subscriptions (
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id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
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tenant_id UUID NOT NULL REFERENCES tenants(id) ON DELETE CASCADE,
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plan VARCHAR(20) NOT NULL, -- free/pro/team/enterprise
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credits_included BIGINT NOT NULL, -- 月包含 Credit (毫)
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credits_used BIGINT NOT NULL DEFAULT 0, -- 本月已用
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price_cents INTEGER NOT NULL DEFAULT 0, -- 月费 (分)
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billing_cycle VARCHAR(10) NOT NULL DEFAULT 'monthly', -- monthly/yearly
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period_start TIMESTAMP WITH TIME ZONE NOT NULL,
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period_end TIMESTAMP WITH TIME ZONE NOT NULL,
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status VARCHAR(20) NOT NULL DEFAULT 'active', -- active/cancelled/expired
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stripe_sub_id VARCHAR(255), -- Stripe 订阅 ID
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created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
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updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
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);
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CREATE INDEX idx_subscriptions_tenant ON subscriptions(tenant_id);
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CREATE INDEX idx_subscriptions_status ON subscriptions(status);
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CREATE INDEX idx_subscriptions_period ON subscriptions(period_start, period_end);
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ALTER TABLE subscriptions ENABLE ROW LEVEL SECURITY;
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CREATE POLICY tenant_isolation ON subscriptions
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USING (tenant_id = current_setting('app.tenant_id')::uuid);
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```
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### 2.5 credit_transactions（Credit 流水 — 不可变）
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```sql
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CREATE TABLE credit_transactions (
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id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
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tenant_id UUID NOT NULL REFERENCES tenants(id),
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type VARCHAR(30) NOT NULL, -- usage/topup/subscription/bonus/refund
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amount BIGINT NOT NULL, -- 变动量 (毫 Credit)，正=加，负=减
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balance_after BIGINT NOT NULL, -- 变动后余额
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description TEXT, -- 描述
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trace_id VARCHAR(64), -- 关联的调用 trace
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idempotency_key VARCHAR(64) UNIQUE, -- 幂等键 (防重复扣费)
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reference_type VARCHAR(30), -- llm_call/skill_purchase/topup/subscription
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reference_id UUID, -- 关联 ID
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created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
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-- 不可变: 无 updated_at, 无 DELETE
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);
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CREATE INDEX idx_credit_tx_tenant ON credit_transactions(tenant_id);
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CREATE INDEX idx_credit_tx_type ON credit_transactions(type);
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CREATE INDEX idx_credit_tx_created ON credit_transactions(created_at);
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CREATE INDEX idx_credit_tx_trace ON credit_transactions(trace_id);
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-- 不可变表: 禁用 UPDATE 和 DELETE
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CREATE RULE credit_tx_no_update AS ON UPDATE TO credit_transactions DO INSTEAD NOTHING;
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CREATE RULE credit_tx_no_delete AS ON DELETE TO credit_transactions DO INSTEAD NOTHING;
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ALTER TABLE credit_transactions ENABLE ROW LEVEL SECURITY;
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CREATE POLICY tenant_isolation ON credit_transactions
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USING (tenant_id = current_setting('app.tenant_id')::uuid);
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```
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### 2.6 token_usage（Token 用量 — 按月分区）
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```sql
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-- 主表 (自动分区)
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CREATE TABLE token_usage (
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id UUID NOT NULL DEFAULT gen_random_uuid(),
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tenant_id UUID NOT NULL,
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capability_id UUID,
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user_id UUID,
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model VARCHAR(100) NOT NULL, -- deepseek-chat, qwen-turbo
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provider VARCHAR(50) NOT NULL, -- deepseek, qianwen, doubao
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prompt_tokens INTEGER NOT NULL,
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completion_tokens INTEGER NOT NULL,
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total_tokens INTEGER NOT NULL,
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cost_credits BIGINT NOT NULL, -- 消耗 Credit (毫)
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trace_id VARCHAR(64),
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metadata JSONB DEFAULT '{}',
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created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
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PRIMARY KEY (id, created_at)
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) PARTITION BY RANGE (created_at);
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-- 按月创建分区
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CREATE TABLE token_usage_2026_07 PARTITION OF token_usage
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FOR VALUES FROM ('2026-07-01') TO ('2026-08-01');
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CREATE TABLE token_usage_2026_08 PARTITION OF token_usage
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FOR VALUES FROM ('2026-08-01') TO ('2026-09-01');
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-- ... 自动创建未来分区
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CREATE INDEX idx_token_usage_tenant ON token_usage(tenant_id, created_at);
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CREATE INDEX idx_token_usage_model ON token_usage(model, created_at);
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CREATE INDEX idx_token_usage_trace ON token_usage(trace_id);
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-- 不可变表
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CREATE RULE token_usage_no_update AS ON UPDATE TO token_usage DO INSTEAD NOTHING;
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CREATE RULE token_usage_no_delete AS ON DELETE TO token_usage DO INSTEAD NOTHING;
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```
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### 2.7 capabilities（能力）
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```sql
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CREATE TABLE capabilities (
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id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
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tenant_id UUID NOT NULL REFERENCES tenants(id) ON DELETE CASCADE,
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name VARCHAR(255) NOT NULL,
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type VARCHAR(30) NOT NULL, -- agent/mcp/skill/llm/custom
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version VARCHAR(50) NOT NULL, -- SemVer
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description TEXT,
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tags TEXT[] DEFAULT '{}',
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endpoint VARCHAR(500), -- 调用地址
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protocol VARCHAR(20) DEFAULT 'rest', -- rest/grpc/websocket
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pricing_config JSONB DEFAULT '{}', -- 计费配置
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dependencies JSONB DEFAULT '[]', -- 依赖的其他能力
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owner_id UUID REFERENCES users(id),
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status VARCHAR(20) NOT NULL DEFAULT 'draft', -- draft/pending_review/active/deprecated/rejected
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review_note TEXT, -- 审核备注
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view_count INTEGER DEFAULT 0, -- 浏览次数
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invoke_count BIGINT DEFAULT 0, -- 调用次数
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created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
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updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
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UNIQUE(tenant_id, name, version)
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);
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CREATE INDEX idx_capabilities_tenant ON capabilities(tenant_id);
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CREATE INDEX idx_capabilities_type ON capabilities(type);
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CREATE INDEX idx_capabilities_status ON capabilities(status);
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CREATE INDEX idx_capabilities_tags ON capabilities USING GIN(tags);
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ALTER TABLE capabilities ENABLE ROW LEVEL SECURITY;
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CREATE POLICY tenant_isolation ON capabilities
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USING (tenant_id = current_setting('app.tenant_id')::uuid);
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```
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### 2.8 capability_versions（能力版本）
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```sql
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CREATE TABLE capability_versions (
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id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
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capability_id UUID NOT NULL REFERENCES capabilities(id) ON DELETE CASCADE,
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version VARCHAR(50) NOT NULL,
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endpoint VARCHAR(500),
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changelog TEXT,
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status VARCHAR(20) NOT NULL DEFAULT 'active', -- active/deprecated
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created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
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UNIQUE(capability_id, version)
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);
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CREATE INDEX idx_cap_versions_cap ON capability_versions(capability_id);
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```
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### 2.9 skills（技能）
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```sql
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CREATE TABLE skills (
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id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
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tenant_id UUID NOT NULL REFERENCES tenants(id) ON DELETE CASCADE,
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name VARCHAR(255) NOT NULL,
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description TEXT,
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category VARCHAR(50), -- 分类
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tags TEXT[] DEFAULT '{}',
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pricing_model VARCHAR(20) NOT NULL DEFAULT 'per_call', -- per_call/per_token/subscription/free
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price_credits BIGINT NOT NULL DEFAULT 0, -- 价格 (毫 Credit)
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developer_share NUMERIC(3,2) DEFAULT 0.75, -- 开发者分成比例
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endpoint VARCHAR(500), -- API 地址
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documentation TEXT, -- 使用文档
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icon_url VARCHAR(500),
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status VARCHAR(20) NOT NULL DEFAULT 'draft', -- draft/active/suspended/deleted
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rating NUMERIC(3,2) DEFAULT 0, -- 评分
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rating_count INTEGER DEFAULT 0, -- 评分人数
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view_count INTEGER DEFAULT 0, -- 浏览次数
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purchase_count INTEGER DEFAULT 0, -- 购买次数
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created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
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updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
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);
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CREATE INDEX idx_skills_tenant ON skills(tenant_id);
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CREATE INDEX idx_skills_category ON skills(category);
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CREATE INDEX idx_skills_status ON skills(status);
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CREATE INDEX idx_skills_tags ON skills USING GIN(tags);
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CREATE INDEX idx_skills_rating ON skills(rating DESC);
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CREATE INDEX idx_skills_name_search ON skills USING GIN(to_tsvector('simple', name || ' ' || COALESCE(description, '')));
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ALTER TABLE skills ENABLE ROW LEVEL SECURITY;
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CREATE POLICY tenant_isolation ON skills
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USING (tenant_id = current_setting('app.tenant_id')::uuid);
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```
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### 2.10 skill_purchases（技能购买）
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```sql
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CREATE TABLE skill_purchases (
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id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
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tenant_id UUID NOT NULL REFERENCES tenants(id),
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user_id UUID NOT NULL REFERENCES users(id),
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skill_id UUID NOT NULL REFERENCES skills(id),
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developer_id UUID NOT NULL, -- 开发者 user_id
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amount_credits BIGINT NOT NULL, -- 支付金额 (毫 Credit)
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platform_share BIGINT NOT NULL, -- 平台分成
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developer_share BIGINT NOT NULL, -- 开发者分成
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status VARCHAR(20) NOT NULL DEFAULT 'active', -- active/refunded
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created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
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);
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CREATE INDEX idx_skill_purchases_user ON skill_purchases(user_id);
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CREATE INDEX idx_skill_purchases_skill ON skill_purchases(skill_id);
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CREATE INDEX idx_skill_purchases_tenant ON skill_purchases(tenant_id);
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```
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### 2.11 im_sessions（IM 会话）
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```sql
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CREATE TABLE im_sessions (
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id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
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tenant_id UUID NOT NULL REFERENCES tenants(id),
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platform VARCHAR(20) NOT NULL, -- wechat/qq/dingtalk/feishu
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user_identifier VARCHAR(255) NOT NULL, -- 平台用户标识
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user_name VARCHAR(255), -- 平台用户名
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bot_id VARCHAR(255), -- 机器人标识
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model VARCHAR(100) DEFAULT 'deepseek-chat', -- 当前使用模型
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status VARCHAR(20) NOT NULL DEFAULT 'active', -- active/closed
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created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
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last_active_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
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);
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CREATE INDEX idx_im_sessions_tenant ON im_sessions(tenant_id);
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CREATE INDEX idx_im_sessions_platform ON im_sessions(platform, user_identifier);
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ALTER TABLE im_sessions ENABLE ROW LEVEL SECURITY;
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CREATE POLICY tenant_isolation ON im_sessions
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USING (tenant_id = current_setting('app.tenant_id')::uuid);
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```
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### 2.12 im_messages（IM 消息）
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```sql
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CREATE TABLE im_messages (
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id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
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session_id UUID NOT NULL REFERENCES im_sessions(id),
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role VARCHAR(10) NOT NULL, -- user/assistant/system
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content TEXT NOT NULL,
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model VARCHAR(100), -- 使用的模型
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tokens_used INTEGER,
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cost_credits BIGINT,
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created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
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);
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CREATE INDEX idx_im_messages_session ON im_messages(session_id, created_at);
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```
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---
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## 3. Redis 数据结构
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### 3.1 计费相关
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```
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# Credit 余额 (毫 Credit)
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billing:balance:{tenant_id} → "12580000"
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# 类型: String
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# 操作: GET / DECRBY (Lua 原子)
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# TTL: 永不过期
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# 幂等键
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billing:idempotency:{tenant_id}:{idempotency_key} → {
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"result": "success",
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"amount": -1280,
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"trace_id": "abc-123"
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}
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# 类型: Hash
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# TTL: 24 小时
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# 每日统计
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billing:daily:{tenant_id}:{YYYY-MM-DD} → {
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"calls": "342",
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"tokens": "456000",
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"credits": "1280000"
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}
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# 类型: Hash
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# TTL: 7 天
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# 订阅信息
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billing:subscription:{tenant_id} → {
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"plan": "pro",
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"credits_included": "50000000",
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"credits_used": "12800000",
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"period_end": "2026-07-27T00:00:00Z"
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}
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# 类型: Hash
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# TTL: 永不过期
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```
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### 3.2 限流相关
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||||
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||||
```
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# 滑动窗口限流
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ratelimit:{tenant_id}:{window_key} → "1" (INCR)
|
||||
# 类型: String
|
||||
# TTL: 窗口大小 (如 60s)
|
||||
```
|
||||
|
||||
### 3.3 IM 会话
|
||||
|
||||
```
|
||||
# 会话上下文
|
||||
im:session:{platform}:{user_id} → {
|
||||
"tenant_id": "xxx",
|
||||
"model": "deepseek-chat",
|
||||
"messages": "[{role,content}, ...]" # 最近 20 条
|
||||
}
|
||||
# 类型: Hash
|
||||
# TTL: 24 小时
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
## 4. Migration 策略
|
||||
|
||||
```
|
||||
migrations/
|
||||
├── 001_init.sql # 所有表 + RLS + 索引
|
||||
├── 002_seed_data.sql # 开发环境种子数据
|
||||
├── 003_add_partitions.sql # token_usage 分区
|
||||
└── 004_add_fulltext.sql # 全文搜索索引
|
||||
```
|
||||
|
||||
**规则**:
|
||||
- Migration 文件名: `{序号}_{描述}.sql`
|
||||
- 不允许修改已执行的 Migration
|
||||
- 每个 Migration 必须可回滚
|
||||
- 生产环境 Migration 必须在低峰期执行
|
||||
|
||||
---
|
||||
|
||||
*文档结束*
|
||||
Reference in new issue
Block a user