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A comment on Why REST is not a silver bullet for service integration. Parent comment
Horizontal scaling is where you add more machines to your pool of resources (servers).
Examples;
Horizontal scaling would be adding more web servers behind the load balancer to facilitate more traffic.
Vertical scaling would be adding more RAM to your database server to keep all the data (or just the indexes if your database is that big) in memory.
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Horizontal scaling is where you add more machines to your pool of resources (servers).
Examples;
Horizontal scaling would be adding more web servers behind the load balancer to facilitate more traffic.
Vertical scaling would be adding more RAM to your database server to keep all the data (or just the indexes if your database is that big) in memory.