21Small requests succeed but large uploads hang mid-flight. What is your leading theory and how do you prove it?▼medium★ EssentialNewCloudflareFlipkartUber◆ premiumThe signature is unmistakable once seen: handshakes complete, then the connection freezes at the same byte count every time. Here is the probe sequence and the fixes, ranked.Open full answer →
22Same-node pod calls work, cross-node calls time out, and small probes pass while real requests hang. Find the break.▼hard★ EssentialNewAmazon & AWSFlipkartUber◆ premiumSame-node good, cross-node bad is not a random clue, it is nearly a diagnosis. One short decision tree separates overlay reachability, encapsulation blocks, MTU and policy.Open full answer →
