High Volume Traffic (25,000 simultaneous visitors)

  • Posted on July 1, 2014
  • sallfAsked by sallf

Hi we are expecting a spike in traffic next week after a promo. Does anyone know if upgrading the droplet to something like the highest of the high volume plans:

64GBMemory 20 CoreProcessor 640GBSSD Disk 9TBTransfer

Would be enough to sustain 25,000 visitors at once or 150,000 hits in a few minutes?

I know they have recommended a DEDICATED server, which DO is not. Does anyone have experience with this?

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This is insane. If you need a machine that big, then there’s something seriously wrong with the application’s architecture. Vertically scaling (bigger machine) is limited. Horizontally scallng (lots of smaller machines, using a load-balancer such as HAProxy to delegate the work is industry-standard) it’s much more scalable and cost-effective as you can add / remove smaller workers to the cluster. The next bottleneck will likely be the database. For now, that will the thing you’ll need to scale-up vertically. To horizontally scale a database will require a lot more thought and expertise. A suggestion would be to use a message bus, like RabbitMQ, which can accept orders, but queue them up to be processed at a later time. Suggest you employ a contract architect for a little while to help you get this right.

I guess If u need good latency and throughput here should be good hosting. Nowadays I use this cdn which deliver the files to my end users in a super speed.

I can recommend to offload the static content to a content delivery network (CDN). This will significantly reduce the outbound traffic on your droplet. I know from my own experience with DO that you can run quickly into issues with your droplet if traffic spikes become too much (as you’re sharing the resources with others). Using a CDN has also the advantage that the content is cached around the world and closer to your end users (versus a droplet which is only one location). For my projects I’m using KeyCDN. They offer a great service. It’s the ideal CDN for my droplets.