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The Meditations Newsletter #030
Alex from Sunsama
[](https://dezyre.gumlet.io/images/blog/real-world-data-engineering-projects-/Data_Engineering_Project_Structure.png?w=700&dpr=1.3%20%22Data%20Engineering%20Project%20Structure%22)
Data Engineering Projects for Beginners
ProjectPro
In [theoretical computer science](https://en.wikipedia.org/wiki/Theoretical_computer_science),
the **CAP theorem**, also named **Brewer's theorem** after computer scientist [Eric Brewer](https://en.wikipedia.org/wiki/Eric_Brewer_(scientist)),
states that any [distributed data store](https://en.wikipedia.org/wiki/Distributed_data_store)
can provide only [two of the following three](https://en.wikipedia.org/wiki/Trilemma) guarantees:
[Consistency](https://en.wikipedia.org/wiki/Consistency_model)
Every read receives the most recent write or an error.
[Availability](https://en.wikipedia.org/wiki/Availability)
Every request receives a (non-error) response, without the guarantee that it contains the most recent write.
[Partition tolerance](https://en.wikipedia.org/wiki/Network_partitioning)
The system continues to operate despite an arbitrary number of messages being dropped (or delayed) by the network between nodes.
CAP theorem
wikipedia.org
...catch up on these, and many more highlights
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