Fine-grained, secure and efficient data provenance on blockchain systems

The Morning Paper

Fine-grained, secure and efficient data provenance on blockchain systems Ruan et al., We haven’t covered a blockchain paper on The Morning Paper for a while, and today’s choice won the best paper award at VLDB’19. For permissioned blockchains we’re all set.

AnyLog: a grand unification of the Internet of things

The Morning Paper

Micropayments require an environment of trust, and in a decentralised context that leads us to blockchains. Groups can be centralised or decentralised, with decentralised groups managed by smart contracts on the AnyLog blockchain. Schema information is stored on the blockchain.

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Should You Use ClickHouse as a Main Operational Database?

Percona

What if we use ClickHouse (which is a columnar analytical database) as our main datastore? Well, typically, an analytical database is not a replacement for a transactional or key/value datastore. how many messages was send for some time period and how much it cost) and a typical key/value queries like: “return 1 message by the message id” Using a columnar analytical database can be a big challenge here.

Stuff The Internet Says On Scalability For June 15th, 2018

High Scalability

1.6x : better deep learning cluster scheduling on k8s; 100,000 : Large-scale Diverse Driving Video Database; 3rd : reddit popularity in the US; 50% : increase in Neural Information Processing System papers, AI bubble? Hey, it's HighScalability time: Scaling fake ratings.

Even more amazing papers at VLDB 2019 (that I didn’t have space to cover yet)

The Morning Paper

MongoDB is an important database, and this paper explains the tunable (per-operation) consistency models that MongoDB provides and how they are implemented under the covers. Microsoft have a paper describing their new recovery mechanism in Azure SQL Database , the key feature being that it can recovery in constant time. Autoscaling tiered cloud storage in Anna. BlockchainDB – it’s a blockchain underneath, and a database on top.