Readit Newsmvitorino commented on Build your next app with a graph database dgraph.io/blog/post/graph... · Posted by u/fernandogmo
"Why you should build your next app with a graph database"
Please don't. Graph databases have only a few niche use cases which, even then, in most occasions, can be adequately covered by a relational database.
mvitorino commented on FastSpark: A New Fast Native Implementation of Spark from Scratch medium.com/@rajasekar3eg/... · Posted by u/mkj
Nice, but I can't find any reason to choose Spark over modern Distributed SQL databases (CockroachDB, CitusDB, TiDB etc. or cloud vendor-specific SQL DBs)
How would you efficiently keep continuously updated complex metrics (aggregations, windowed functions, etc) calculated on top of unbounded/streaming data using a database? I'm not saying that Spark is the ideal solution, but there are a set of problems that require tools such as Spark.
mvitorino commented on It’s Okay to Store Data in Apache Kafka (2017) confluent.io/blog/okay-st... · Posted by u/ooooak
IMO using Kafka for long term storage is not the greatest idea. It is expensive to keep CPU and RAM constantly on top of data that it going to be cold most of the time. There is no DML which means mistakes are expensive (from an engineering pov). And while the whole event sourcing paradigm can work quite well in narrow domains with teams fully aware of the implications of what they are doing, in practice, on large orgs, it is hard to scale (from a people perspective).
mvitorino commented on In an Era of ‘Smart’ Things, Sometimes Dumb Stuff Is Better nytimes.com/2018/02/21/te... · Posted by u/Dangeranger
Worth noting that Google has essentially deprecated Cloud Datastore in favor of Firebase Cloud Firestore. As far as I can tell, its unclear what the exact relationship between these two products is, but if you have a GCP Project which has never used Cloud Datastore but has the Cloud Firestore Beta enabled, you cannot access Cloud Datstore.
I wasn't aware. Thanks.
mvitorino commented on Catalan parliament declares independence from Spain bbc.co.uk/news/world-euro... · Posted by u/ryanlol
Of course they can continue to use the euro. They wouldn't have any control over it, but a country can use whatever currency their population will accept. IIRC there are a few small nations that don't really have their own currency and just use USD instead.
You are right, I oversimplified it in my comment. People could still trade using euros. But I guess the only way to get more currency in the country would be via foreign trade. Banks would not have access to EU QE, deposit guarantees might be no longer valid and the state could no longer print currency to replace old ones.
Humans have been unable to recover from mistakes since day zero