Do small projects need both HLD and LLD?
For small projects, both can fit in one doc. The point is to think big picture first, then detail. The size of the doc does not matter; the order of thought does.
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More FAQs in High-Level Design (HLD) vs Low-Level Design (LLD): What's the Difference
HLD shows the big picture: major components, how they talk, tech stack. LLD shows the detail: schemas, API contracts, internal logic. HLD settles architecture; LLD settles implementation.
HLD first, then LLD. You decide the architecture before detailing the implementation. LLD depends on HLD.
The major components, how they communicate, external services (database, cache, email), and tech stack choices. It is a big-picture diagram anyone can understand quickly.
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