Seven Databases in Seven Weeks: A Guide to Modern DBs and the NoSQL Movement | Hacker News Reader

Seven Databases in Seven Weeks: A Guide to Modern DBs and the NoSQL Movement

pragprog.com

35 pointsmapleoin14 comments

To me this seems to be a commercial posting. Is that allowed?

Uh...aren't a lot of "Show HN: [my app/startup]" commercial postings in nature?

Yes. But I have to admit I was disappointed to see this was just a marketing link for a book considering how much the title sounds like an article or tech blog post.

I think the title could be a lot more clear that this is just a link to info about a commercial book and not a link to traditional web content, though in this case the title is so long I'm not sure how they could have conveyed that well.

Yep. looks like Spam to me. Smells like Spam to me. Flagged as Spam.

Not spam. Neither Jim nor I (Eric) posted this... I'm not sure who did. You need to check your sniffer ;)

I call spam anything that is in my news feed but ask me to buy something instead of informing me. Sorry if you took it personally.

Ironically, i wouldn't call spam if done by you (assume the authors) with the "show hn" shenanigans...

Why are you asking 'is this allowed'? This is a news website, not a board game.. You should be asking 'is this interesting to me or to other HN readers'. And in my opinion the answer is yes.

The video alone looks cool enough to share...

I would have loved to see Cassandra and an entrant from an ACID compliant Memory Only DB like VoltDB. Still it looks like a good read. Anyone selling a used copy ?

We considered Cassandra early on. After much discussion, Eric and I decided against including it. Cassandra implements a BigTable-esque API and also takes a page from the Amazon Dynamo playbook to implement ring-based sharding.

We felt that HBase and Riak more faithfully represented BigTable and Dynamo respectively. Writing about these two databases gave us a better chance to discuss the columnar and key/value genres independently.

It was definitely a tough choice though.

Is "movement" really the right word here?

Cassandra is missing. So is HyperDex, which offers consistency and performance not found in others.

Thanks for the heads up on HyperDex - I'd missed that. Do you know of a good web reference that tracks new datastore implementations?

I've got the book - its good heads up for someone like me who is mainly working in non DB areas and needs a quick summary of alternatives. I would have liked more on SQL and pre web era data stores.

VoltDB would have been nice. Redis is more interesting to me than most of the NoSQL solutions - as it offers me something different than I can coax an SQL DB into delivering.

Just got this book, and i'm loving it.

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