RethinkDB 1.6 is out: regex matching, new array operations, random sampling

Re:RethinkDB 1.6 is out: regex matching, new array operation... by coffeemug on Thursday June 13, 2013 @05:07PM (#5876590)

This is a great writeup and helps tremendously, thank you! Now, wrt specifics.

> the find-and-modify command

This has been baked into ReQL from day one and doesn't require a special command. Here's an example:

  # 'jobs' table contains documents of the form
  # { type: 'type', jobs: ['job1', 'job2'] }
  r.table('jobs').filter({type: 'printer'}).update(function(row) {
    return r.branch(
      row('jobs').contains('job1'),             // if there is job1 in the array
      {jobs: row('jobs').difference(['job1'])}, // atomically remove job1
      null                                      // else don't modify the object
    );
  })

This isn't limited to arrays -- you can do all sorts of atomic find and modify this way within a single document. We clearly need to do a better job documenting this. I'll make sure that happens.

> Packaged linux/mac Rethink binaries

That's been available for a while -- http://rethinkdb.com/docs/install/, you can download a binary pkg for OS X if you don't want to use brew, and we support apt-get on ubuntu/debian via a private PPA. We'll be adding binary packages for more distros soon.

> binary storage format

Mongo wins on this one, but it's definitely on the horizon -- https://github.com/rethinkdb/rethinkdb/issues/137. The storage engine bits for this have been done for a long time, we just have to figure out a sane ReQL API (which is harder than it seems).

> Query optimizer

This is a somewhat longer-term project (i.e. we probably won't get to it by mid-fall), but we're definitely thinking about it. So far though, there hasn't been a real use case yet where it's a problem.

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Re:RethinkDB 1.6 is out: regex matching, new array operation... by JulianMorrison on Saturday June 15, 2013 @07:17PM (#5886624)

ReQL for binary suggestion: take binary input in the form of a no-args generator function (called repeatedly, returns a series of binary blobs and then null as EOF) or where the language permits, allow a language specific abstraction of a read-once stream such as an IO in Ruby as a higher level wrapper for that. Return binary data in the same form.

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Re:RethinkDB 1.6 is out: regex matching, new array operation... by coffeemug on Monday June 17, 2013 @09:45PM (#5897079)

Thanks, this is cool. I posted this suggestion as a comment on the issue (https://github.com/rethinkdb/rethinkdb/issues/137).

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