ACID Transactions in a Distributed DB Are Always DistributedĪCID transactions in a distributed database are not always distributed. Apple’s FoundationDB is an ACID-compliant, key-value NoSQL database with a Transaction Manifesto that points out that Transactions are the future of NoSQL. YugaByte DB, a NoSQL compatible database, extended the popular Cassandra Query Language with a SQL-like transaction syntax. MongoDB added single shard transactions (see next section) along with start_transaction & commit_transaction syntax in its recent 4.0 release. However, increasingly even NoSQL databases are becoming transactional. NoSQL APIs usually have no such syntax and updates are usually limited to only one row/key at a time (with eventual consistency). ACID Compliance Requires SQLĪll SQL variants have dedicated syntax (such as BEGIN TRANSACTION & END TRANSACTION) to highlight whether a set of operations should be treated as a single ACID transaction. It does so by pointing out 6 common signs of misunderstanding that have made their way into developers mindset after 10 years of the NoSQL era. This post enables app developers to get a more accurate understanding of ACID transactions in distributed databases. And it is possible to do so using both NoSQL and SQL APIs. ![]() Enterprises in verticals such as retail, finance, SaaS and gaming can gain a competitive advantage today by launching highly engaging customer-facing apps with transactional integrity, low latency and linear scalability across multiple cloud regions, all simultaneously. those provided by the public clouds).Īpp developers who blindly accept the above reasoning are not serving their organizations well. And the premise was that modern distributed apps should instead focus on linear database scalability along with low latency, mostly-accurate, single-key-only operations on shared-nothing storage (e.g. ![]() 6 Signs You Might be Misunderstanding ACID Transactions in Distributed DatabasesĪs described in A Primer on ACID Transactions, first generation NoSQL databases dropped ACID guarantees with the rationale that such guarantees are needed only by old school enterprises running monolithic, relational applications in a single private datacenter.
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