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DB migration failure at startup panicked via .expect() (main.rs:223), dumping a raw backtrace for what is usually just "PostgreSQL isn't running yet". Worse, the 1.6s runtime retry budget was reused at startup, so it almost always failed against a cold/slow DB (docker-compose without healthchecks, local Postgres not started, etc.). Changes: - pool: extract build_pg_config() (returns Result, no panic); add validate_database_url() so URL-format / DB_POOL_SIZE errors surface as friendly exit(1) instead of hitting the LazyLock's unreachable .expect() - pool: add get_conn_for_startup() — a startup-only retry loop with a configurable total-duration window (MIGRATE_STARTUP_TIMEOUT_SECS, default 30s, 500ms interval), separate from the runtime get_conn() anti-avalanche fast retry (untouched) - migrate: split run() into run_on_conn(&mut conn) so callers control the connection-acquisition strategy; main.rs pairs this with the startup retry. Advisory-lock release comment updated: exit(1) terminates the process just like panic, so the session-level lock is still freed - main: startup fatal errors (bad URL, DB unreachable, migration failed) now each emit tracing::error! + eprintln! ERROR + targeted HINT, then exit(1) — no panic, no backtrace nudge - .env.example / AGENTS.md: document MIGRATE_STARTUP_TIMEOUT_SECS No runtime behavior change: get_conn() and its ~40 call sites are unchanged. Advisory-lock safety preserved (documented in migrate.rs).
Yggdrasil
基于 Dioxus 0.7 的全栈博客系统，Rust 单一代码库同时编译为 WASM 前端和原生服务端。
技术栈
- 框架: Dioxus 0.7 (fullstack)
- 数据库: PostgreSQL + tokio-postgres
- 样式: Tailwind CSS v4
- 密码: Argon2
- 会话: UUID token + cookie
功能
- 邮箱注册 / 登录（单管理员模式，首次注册后关闭）
- 会话管理与自动过期清理
- 暗色 / 亮色主题切换
- 后台文章撰写（Tiptap Markdown 编辑器）
- 文章归档与标签浏览
开发
依赖 Rust 1.95+、wasm32 目标、dx CLI、tailwindcss CLI v4 和 PostgreSQL。
# 配置数据库
DATABASE_URL=postgres://postgres:postgres@localhost:5432/yggdrasil
# 运行迁移（自动创建数据库并按顺序执行 migrations/ 下所有 SQL）
./migrate.sh
# 启动开发服务器
make dev
构建
make build