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WeAreDevelopers LIVE • Dec 7, 2021

Covid-19 - A crowdsourced map for checking supermarket wait times worldwide

Miki Lombardi

A viral Covid-19 map started on a single Raspberry Pi before scaling to millions of users. Discover the lean Redis architecture that kept peak monthly costs under $25.

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#1 about 4 min

Managing grocery store wait times during global lockdowns

How sudden pandemic lockdowns created unmanageable lines and high infection risks at local supermarkets.

#2 about 6 min

Building a crowdsourced map for tracking wait times

Leveraging crowdsourced user feedback tracks and visualizes real-time local grocery store line durations.

#3 about 3 min

Hosting a full stack application on a Raspberry Pi

Utilizing a local hardware setup with port forwarding directly deploys the initial backend and cache layer.

#4 about 4 min

Migrating from local hardware to virtual private servers

Moving backend operations to a cloud environment effectively handles increased traffic volume beyond hardware capabilities.

#5 about 3 min

Architecting caching layers for high concurrent user traffic

Implementing a robust API rotation and caching mechanism ensures system availability without requiring expensive load balancers.

#6 about 7 min

Managing geospatial queries and analytical endpoints with Redis

Processing mapped coordinates and executing geospatial filtering helps users discover less crowded alternative destinations.

#7 about 5 min

Analyzing cloud hosting costs and bandwidth telemetry limitations

Optimizing API data constraints keeps external server operational expenses minimal despite servicing millions of routine requests.

#8 about 4 min

Launching open source projects and integrating accessibility updates

Collaborating with external contributors introduces substantial user interface improvements alongside comprehensive web accessibility standards.

#9 about 6 min

Exploring traffic correlations and alternative technical caching architectures

Evaluating adoption usage patterns reveals structural infrastructure revisions that could demonstrably improve data delivery workflows.

#10 about 6 min

Achieving viral traction and unexpected professional networking outcomes

Capitalizing on immediate consumer necessities translates organic engagement metrics into substantive career networking and recruitment scenarios.

Matching moments

3:42 min

Managing high-traffic infrastructure without chasing technology hype

Josip Stuhli Josip Stuhli · Coffee With Developers

5:47 min

Deploying a progressive web app during crisis response

Nico Martin · LIVE

1:24 min

Building serverless REST and GraphQL APIs for COVID-19 data

Maxime Beugnet · World Congress 2021

4:55 min

Overcoming network unreliability in grocery store picking applications

Enrico La Torre +1 · World Congress 2023

5:28 min

Managing server costs and application clones after viral growth

Nolan Royalty · Coffee With Developers

2:17 min

Community engagement, open-source resources, and audience Q&A discussions

Gerta Sheganaku +1 · World Congress 2023

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