Tales from the trenches; Building Denmark’s biggest EV charging network
summary
Clever reengineers a CPMS on Azure, replacing a fragile Service Fabric + Service Bus setup to onboard 10k→100k+ chargers, adding a WebSocket-based protocol, a broker for backward compatibility, a CLI and management plane, and event sourcing that holds 1.6 billion events. Analytics move from expensive Cosmos to Azure Data Explorer for 827M monthly messages with <300ms ingest. Production launch for a new hypercharger happens two weeks early, handles real traffic, exposes thundering‑herd and DNS lessons, and proves the architecture works.
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chapters (22)
- 0:00Introduction
- 0:34About Clever
- 3:05Who are we
- 4:17The story begins
- 5:56The landscape in 2020
- 7:26The challenge of rapid growth
- 10:18Bringing in a new team
- 14:44Team effort
- 16:12Naming standards
- 21:57Where are we today
- 23:12The challenge
- 26:03The solution
- 30:04Production
- 35:45CLI
- 39:16Sunflower
- 40:11Front page
- 41:03Animations
- 44:33Insight
- 48:58Data Explorer
- 51:23Hypercharger
- 52:50Thundering Herd
- 59:44Conclusion
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