Async programming paradigm with nodejs and redis-node

Question

How to translate the following sync pseudo code into async js code

result = []
for pid in r.smembers('active_prog'):
    for prog_obj in r.hgetall("prog:" + pid):
        for item_obj in r.hgetall("item:" + prog_obj['iid']):
            prog_obj['items'].append(item_obj)
        result.append(prog_obj)
return result

That's seems natural in sync programming:

get some ids,
get items by id
get relevant information for each items and attach those info to them
merge all items into an array and return

I've tried using MULTI but it seem doesn't work when the recursion goes deeper.

Is there any recommendation for learning programming in async paradigm?(preferably in js code rather than .net stuff)

yojimbo87 · Accepted Answer · 2011-07-28 07:07:32Z

15

Is there any recommendation for learning programming in async paradigm?

Try to look at these:

In order to prevent deeply nested callbacks in your code you can take advantage of several flow control node.js modules such as:

answered Jul 28, 2011 at 7:07

yojimbo87

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2 Comments

Raynos Over a year ago

Why you no recommend futuresJS

cqpx Over a year ago

Thank you, the Control Flow in Node series help a lot

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