Algorithms you need to know before you take that Systems Design Interview

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1. Geohash | Location based service
2. Quadtree | Location based service
3. Consistent hashing | Balance the load within a cluster of services
4. Leaky bucket | Rate limiter
5. Token bucket | Rate limiter
6. Trie | Search autocomplete
7. Rsync | File transfers
8. Raft/Paxos | Consensus algorithms
9. Bloomfilter | Eliminate costly lookups
10. Merkle tree | Identify inconsistencies between nodes
11.  HyperLogLog | Count unique values fast
12. Count-min sketch | Estimate frequencies of items
13. Hierarchical timing wheels | Job scheduler
14. Operational transformation | Collaborative editing
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