数据库与存储
elasticsearch-index
更新于 2026-08-07
Elasticsearch 工程规则
Elasticsearch rules: alias-based reindexing and mapping compatibility
- 技术栈
- Elasticsearch
- 主题
- 工程基线
- 条目
- 9 条
- 版本
- v0.2.0
✓ 应当这么做
- ✓ Apply schema changes in expand/migrate/contract phases so old and new code co-exist
- ✓ Create indexes concurrently on live tables and verify lock behaviour before deploying
- ✓ Make every migration idempotent and reversible
✕ 常见反模式
- ✕ Long table rewrites under a global lock during business hours
- ✕ Implicit N+1 patterns in ORM relations touched by the change
- ✕ Destructive column drops in the same release as the read code removal
◎ 交付前验证
- ◎ EXPLAIN on the hot queries shows no sequential scan regression
- ◎ Migration rehearsed on a production-size snapshot
- ◎ Rollback path executed at least once in staging
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26 篇数据库与存储
PostgreSQL 工程规则
Zero-downtime PostgreSQL rules: expand/contract phases and concurrent index builds
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MySQL 工程规则
MySQL rules: online DDL awareness, lock timeouts and reversible migrations
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Redis 工程规则
Redis rules: explicit TTLs, versioned keys and stampede-safe misses
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MongoDB 工程规则
MongoDB rules: explicit schema validators and index-backed query shapes
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ClickHouse 工程规则
ClickHouse rules: partition pruning, column ordering and batch inserts
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SQLite 工程规则
SQLite rules: WAL mode, short transactions and explicit schema migrations