The Ledger
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Merriman: JSON document models will emerge as the standard NoSQL data model
“My belief, which is opinion, is that in, in the end of these NoSQL data models, that the document-oriented model will be the one that kind of converges on for standard, and specifically JSON style, or JSON based.”
Merriman: MongoDB only supports single-document ACID transactions
“What we do currently in Mongo is we do these little microtransactions, which sort of, say, give you ACID properties, but only on a single document at a time, right? Because a single JSON document lives on one and only shard in a Mongo cluster at a given point …”
Merriman: MongoDB 2.2 eliminates global read-write lock to improve concurrency
“Historically in Mongo, sort of the concurrency in a single MongoD process on a single server has been suboptimal. And, ah, between servers it's been good, but inside a single server it needed a lot of work. So there was a global reader-irelock, which has been …”