Adding emoji reactions to your Astro blog with Netlify Blobs
Original post: Adding emoji reactions to your Astro blog with Netlify Blobs Comments ask a lot of a reader. Reactions ask almost nothing, a single click and a second of intent. That asymmetry is what makes them worth adding: most readers who found your post useful will never write a comment, but many of them will click a heart or a lightbulb if you make it easy enough. This post covers the full…
Adding emoji reactions to your Astro blog with Netlify Blobs allows readers to express their appreciation with a simple click, without the commitment of leaving a comment. This feature provides value to most visitors who find the post helpful, yet rarely engage through comments. To implement this functionality, Netlify Blobs is utilized as a managed key-value store, requiring no database setup or management.
Local development relies on the explicit fallback values for NETLIFY_SITE_ID and either NETLIFY_AUTH_TOKEN or NETLIFY_PAT in the .env file. The package @netlify/blobs is installed using pnpm add @netlify/blobs. The serverless function, located at netlify/functions/reactions.ts, manages three HTTP methods: GET for fetching reaction counts, POST for recording a reaction, and OPTIONS for CORS preflight.
The function employs various regular expressions and conditional checks to validate incoming requests and establish appropriate CORS headers.
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