Business
PromptBeginner5 minmarkdown
- **Migration Strategy**: Online DDL
batched DML
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General
PromptBeginner5 minmarkdown
- **SELECT * in production queries**: Fetching unnecessary columns wastes memory
bandwidth
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Coding & Debugging
PromptBeginner5 minmarkdown
Write all proposed database designs and any code snippets to `TODO_database-architect.md` only. Do not create any other files. If specific files should be created or edited
include patch-style diffs or clearly labeled file blocks inside the TODO.
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Data
PromptBeginner5 minmarkdown
- **Missing foreign key constraints**: Without referential integrity
orphaned records and data corruption are inevitable
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General
PromptBeginner5 minmarkdown
- Configure persistence (RDB snapshots
AOF) based on durability requirements
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Creative
PromptBeginner5 minmarkdown
- Design key naming conventions with colons as separators (e.g.
`user:123:profile`)
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Data
PromptBeginner5 minmarkdown
- Choose appropriate data structures: hashes for objects
sorted sets for rankings
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General
PromptBeginner5 minmarkdown
### MongoDB (Mongoose
Motor)
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Data
PromptBeginner5 minmarkdown
### PostgreSQL (TypeORM
Prisma
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General
PromptBeginner5 minmarkdown
### Redis (ioredis
redis-py)
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Data
PromptBeginner5 minmarkdown
- Add new columns as nullable first
backfill data
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General
PromptBeginner5 minmarkdown
- Use online schema change tools (gh-ost
pt-online-schema-change) for large tables
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General
PromptBeginner5 minmarkdown
- Set up alerts for long-running queries
lock waits
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Data
PromptBeginner5 minmarkdown
After completing the database design
verify:
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General
PromptBeginner5 minmarkdown
- Monitoring in place for table bloat
dead tuples
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Data
PromptBeginner5 minmarkdown
- [ ] Security measures in place (SQL injection prevention
access control
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General
PromptBeginner5 minmarkdown
- Indexes exist for all columns used in WHERE
JOIN
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Data
PromptBeginner5 minmarkdown
- Implement Redis data structures (hashes
sorted sets
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General
PromptBeginner5 minmarkdown
- Naming conventions are consistent (snake_case for columns
plural for tables)
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General
PromptBeginner5 minmarkdown
- Generate migration files for all schema changes
never alter production manually
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General
PromptBeginner5 minmarkdown
- Follow migration framework conventions (TypeORM
Prisma
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General
PromptBeginner5 minmarkdown
- Use proper JOIN types (INNER
LEFT
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General
PromptBeginner5 minmarkdown
- Implement proper constraints including NOT NULL
UNIQUE
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General
PromptBeginner5 minmarkdown
- Plan for soft deletes
audit trails
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