One quarter million…
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The M9.0 Tohoku Earthquake in Japan last Friday has caused a spike in interest in earthquakes. That’s pushed the USGS Earthquake Notification Service, also known as my Pet Project, past its latest milestone.
Yesterday, I saw that ENS had passed 250,000 subscribers. It still amazes me that something I invented is used by so many people worldwide.
After the M7.2 Sierra El Mayor Earthquake last year, it processed about 700 earthquakes and sent 4,600,000 messages. But at that time, that was enough that the system ground to a halt under the load. This time, the system ran fine the whole time. I checked the logs, and in the first 24 hours after the Tohoku Earthquake, it processed 308 events and sent about 4,500,000 messages about them. I’d done some re-architecture of the database last year to increase its performance, and the system ran fine this time.
