[blog] Add breaking change blog post for Fan entity preset mode optimizations #69
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Pull Request Overview
This PR introduces a new blog post documenting breaking changes to the Fan Entity class in ESPHome 2025.11.0, specifically the migration from heap-allocated std::set<std::string> to flash-stored std::vector<const char*> for preset modes. The change includes author metadata for the blog post author.
Key changes:
- New comprehensive migration guide for Fan Entity preset mode storage changes
- Documentation of memory optimization benefits (80+ bytes saved per fan component)
- Complete code examples showing before/after patterns for external component developers
Reviewed Changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.
| File | Description |
|---|---|
| docs/blog/posts/2025-11-07-fan-entity-preset-modes.md | New blog post documenting Fan Entity preset mode API changes and migration guide |
| docs/blog/.authors.yml | Added author metadata for bdraco (J. Nick Koston) |
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jesserockz
approved these changes
Nov 11, 2025
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Summary
Adds blog post documenting breaking changes in Fan entity class (esphome/esphome#11483).
Breaking changes:
std::set<std::string>tostd::vector<const char*>(at least 24 bytes overhead + string length, plus ~70+ bytes with presets)Blog post includes complete migration guide, lifetime safety patterns, grep commands, and explanation of user-facing behavior change. Includes note about std::find_if flash overhead for ESP8266 devices.
Files:
docs/blog/posts/2025-11-07-fan-entity-preset-modes.md- Blog postdocs/blog/.authors.yml- Add bdraco author (since PRs [blog] Add breaking change blog post for action framework const ref optimization #66, [blog] Add breaking change blog post for Select entity class optimizations #67, [blog] Add breaking change blog post for Climate entity class optimizations #68 haven't merged yet)