Multiple ChoiceHard 45s
URL Shortener Hot Key Mitigation
A single short URL goes viral and overloads one storage node. What is the best mitigation?
Options
- 1Serve hot mappings from a distributed read cache and/or replicate the mapping so reads spread across nodes
- 2Reassign the hot key to a fresh random storage node on every single incoming read request for that mapping
- 3Increase the shortened key length substantially so that each read is spread over many more storage nodes
- 4Disable click analytics for that particular short key so the excess traffic stops reaching the storage node
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