Architecture & DesignBeginner
Source of Truth
PronunciationSORS uv TROOTH
Definition
The one place where a piece of information officially lives. When two copies disagree, this one wins.
Where you hear it
Documentation, system design, and config management.
Examples
The database is the source of truth; the cache is only a copy.
Where is the source of truth for prices?
Common mistake
Having several "sources of truth". Then you actually have none, only a bug waiting to happen.
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