@pydevgo

Mukul Kumar

@pydevgoJoined October 2026

Engineering deep dives into system design, distributed systems, and the trade-offs behind real-world technology.

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An analysis of Starlink's 2.5-hour global outage. How ground core control planes create single points of failure for LEO satellite networks.

Worked US East EC2 math: how the 60-second floor doubles 30s batch jobs, why partial Capacity Reservations bill idle slots, and EBS/T3 fees.

Worked US East S3 math: how 100M GETs ($40) outgrow 1 TiB storage ($23.55), and why Standard-IA and Glacier Instant bill a 128 KiB floor.

Are AI-generated code dependencies a real security risk?

Explore Discord's messaging architecture, Cassandra data modeling, hot partitions, and the trade-offs behind storing trillions of messages at scale.

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