mikemintz

mikemintz

vor 9 Jahrendiscuss

One could buy long-term (LEAPS) put options to bet against a company, avoiding the unlimited downside of a naked short.

mikemintz

vor 11 Jahrendiscuss

Thanks, I stand corrected! I always ignored initial values so I forgot about that case.

mikemintz

vor 11 Jahrendiscuss

Check out compose.io

https://www.rethinkdb.com/blog/compose/

https://www.compose.io/rethinkdb/

mikemintz

vor 11 Jahrendiscuss

I don't think there are actually any breaking changes. The release notes say "includeInitial" is breaking, but I think all of your existing application code will continue to run the same if you upgrade RethinkDB. It's just that new code using includeInitial will fail on old versions of RethinkDB.

mikemintz

vor 11 Jahrendiscuss

This is a really exciting release! Atomic changefeeds make it much more consistent and robust to subscribe to realtime data in the client, and the performance improvements look incredible.

mikemintz

vor 11 Jahrendiscuss

I made a simple chess app with React and RethinkDB: https://github.com/mikemintz/react-rethinkdb/tree/master/exa...

mikemintz

vor 11 Jahrendiscuss

Hi Slava! Your project was immensely helpful for me to figure out what's possible. Optimistic updating is definitely the biggest and most challenging feature on my roadmap. I figured I'd save it until last so that by the time I start working on it some of those kinks would be figured out :) but I'm going to take a close look at the blocking issues.

Even when those RethinkDB issues get resolved, I still have some conceptual questions understanding how to make arbitrary queries update optimistically. For example, say that I'm subscribed to:

  r.table('proposals').pluck('name')

And I issue the following update:

  r.table('proposals').filter(r.row('votes').eq(0)).delete()

On the client side, because I used the pluck('name') operation in the subscription query, we can't possibly know which rows to optimistically delete since we didn't download the 'votes' field.

Do you know how this issue is addressed in meteor? I'm currently thinking I'll have to limit optimistic updating to queries that follow a simple structure, but I'd love a more general solution.

mikemintz

vor 11 Jahrendiscuss

DB queries are validated through a whitelist on the server, so it should be impossible to run an unauthorized query when it's locked down. E.g. https://github.com/mikemintz/react-rethinkdb/blob/master/exa...

Submissions

Department of Homeland Security to Abandon H1B Visa Lottery for Salary Rankings

Order Size in the HFT Era: Identifying Trader Type

Creating an HFT Strategy: Identifying Trader Type

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