Networking Troubleshooting
Where the time goes, latency against bandwidth, MTU black holes, keepalives, packet loss, tcpdump and reading a capture, exhausted connections and intermittent failures.
10 lessons · about 88 minutes
What you'll go through
- 01The request that takes three seconds8 min
- 02You doubled the bandwidth and nothing improved8 min
- 03Small requests work and large uploads hang forever9 min
- 04The connection that was closed and nobody told you8 min
- 05One percent packet loss and half the throughput9 min
- 06When you have to see the packets themselves9 min
- 07Reading a capture without reading every packet9 min
- 08Cannot assign requested address9 min
- 09It fails one time in five and nobody can reproduce it9 min
- 10Post-mortem: the peak that took down a healthy service10 min
Included in this pack
Networking — How a packet gets there, what goes wrong with HTTP, and how to diagnose a connection that fails intermittently. Three courses, 30 lessons.
Also in this pack
Networking Fundamentals
Addresses, routing, ports, TCP and UDP, DNS and its caches, TLS and certificate errors — and a method for turning «it doesn't connect» into a question you can answer.
10 lessons · ~81 min$19.90
HTTP in Practice
Status codes that lie, caching, cookies and sessions, CORS, redirect loops, proxies and what HTTP/2 and HTTP/3 did and did not change.
10 lessons · ~84 min$19.90