Time-Series Data Patterns

1. Why Time Series Breaks the Usual Rules

Time-series data is where every modeling mistake from the previous lesson appears at once, because it has three properties that fight the normal approach.

• Writes are relentless and append-only. The write rate is set by the number of sources rather than by user behavior, so it does not have a quiet hour and it does not back off.
• The natural key is monotonic. Time only increases, which is exactly the key shape that concentrates every write on one partition.
• **Value decays faster than for any other data