alt Hacker NewsRe: transition to micro services (from monolith).
I’m surprised a network so sensitive to latency (as are payment networks), was able to achieve their latency SLAs with micro services.
Maybe Amex being a closed-loop network helps with latency?
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mattclarkdotnet • today at 3:40 AM
Since when were payment networks latency sensitive? It’s usually 2 or more seconds to even get a payment up on the card terminal from the merchant POST system, then 2-5 seconds more from card presentation to getting approval back.
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bob1029 • today at 7:58 AM
> Maybe Amex being a closed-loop network helps with latency?
Yes, this is a huge deal. VisaNet and friends have to wait on the actual bank cores in order to perform online authorization. Amex can guarantee end to end latency.
Every major high-throughput database now runs as microservices, not sure why people still act like things just grind to a halt when the network is involved.