Top "Consistency" questions

In database systems, a consistent transaction is one that does not violate any integrity constraints during its execution.

CAP theorem - Availability and Partition Tolerance

While I try to understand the "Availability" (A) and "Partition tolerance" (P) in CAP, I found it difficult to understand …

database nosql consistency availability
How do I set the consistency level of an individual CQL query in CQL3?

In the earlier beta releases of CQL, there was a command I could use to set the read / write consistency …

cassandra cql3 datastax-enterprise consistency
Amazon - DynamoDB Strong consistent reads, Are they latest and how?

In an attempt to use Dynamodb for one of projects, I have a doubt regarding the strong consistency model of …

amazon-web-services amazon-dynamodb consistency eventual-consistency
C/C++ algorithm to produce same pseudo-random number sequences from same seed on different platforms?

The title says it all, I am looking for something preferably stand-alone because I don't want to add more libraries. …

c++ c random portability consistency
Which part of the CAP theorem does Cassandra sacrifice and why?

There is a great talk here about simulating partition issues in Cassandra with Kingsby's Jesper library. My question is - …

cassandra partitioning high-availability consistency cap-theorem
how to set cassandra read and write consistency

I can not find the documentation for this. I know there is a consistency command in cqlsh, but there is …

cassandra consistency
Keeping testing and production server environments clean, in sync, and consistent

It seems that the company that I work for is always struggling with our customers’ server environments. Specifically, we almost …

synchronization production-environment consistency test-environments
Python - Why do the find and index methods work differently?

In Python, find and index are very similar methods, used to look up values in a sequence type. find is …

python methods indexing find consistency
What are the differences between sequential consistency and quiescent consistency?

Can anyone explain me the definitions and differences between sequential consistency and quiescent consistency? In the most dumb form possible :| …

sequential consistency
Is DynamoDB still following CAP theorem with its "Strong Consistency" promises?

Previously, DynamoDB was providing "eventual consistency" only, obeying "Availability" and "Partition Tolerance" portion of CAP theorem. But now, DynamoDB provides "…

amazon amazon-dynamodb key-value consistency availability