Blog

Notes from building Jellyfish.

Founder essays, technical deep-dives on real-time occupancy, and local guides to the San Diego neighborhoods we serve. Every post human-reviewed.

Best Rooftop Bars in San Diego Right Now

Check out San Diego's top rooftop bars with views of the bay, city skyline, and sunsets. Find the best spots in Gaslamp Quarter, Little Italy, and more.

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Late-Night Food in Gaslamp Quarter: Where to Eat After Bars Close

Hungry after bar-hopping Gaslamp Quarter? Find the best late-night eats open till 2-3am: tacos, pizza, burgers, and more real spots.

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Why we built Jellyfish.

The story behind the bet — a napkin at a State College bar in 2017, nine years of compounding patience, and the moment 'where should we go tonight?' stopped being a question anyone should answer with a group chat.

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How we measure "live" busyness.

Three signals fused into a 5-band scale. Pulse reports, anonymized presence, live forecasting. Why 'popular times' averages aren't enough — and why a grey pin is more honest than a guessed one.

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Building for San Diego first.

Why every category-defining live-data product starts in a single city. The 19 SD neighborhoods on the Jellyfish map — from Pacific Beach to Carlsbad, Gaslamp to Coronado, Encinitas to Point Loma — and why we'll get this one city right before opening the next.

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