redis node library json serialization for list values

Question

I'm trying to create an activity feed list in redis using the redis-node library and had a json serialization question.

If I lpush a value into a key, the values get stored as escaped json, and when I retrieve with lrange, I get a list of escaped json back.

Should I simply iterate over the list items and JSON.parse(item) each, or is there a better more efficient method? Specifically, is there a configuration I can use to avoid the overhead of escaping and unescaping the json values?

fent · Accepted Answer · 2011-12-24 23:04:50Z

2

Use JSON.strinfigy(object) when storing your value and use JSON.parse(value) when retrieving it.

answered Dec 24, 2011 at 23:04

fent

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6 Comments

MonkeyBonkey Over a year ago

is there a way to store it without the escaped quotes, or as a native json object rather than stringily and parse?

fent Over a year ago

redis stores JSON as a string. Why does it matter if quotes in values are escaped? They have to be in order for anyone to know when the value ends.

MonkeyBonkey Over a year ago

was hoping to avoid iterating through the list item collection and calling json parse on each item.

fent Over a year ago

If it did return a Javascript object instead of a JSON string, it would have to call JSON.parse on it at some point. You can extend the redis module by adding a middleware function that does just that.

NiCk Newman Over a year ago

@MonkeyBonkey Yes, I modified Douglas Crawfords JSON script. It removes the unecessary quotes around the key names (but still leaves the quotes around the property names (obviously or JSON wouldn't work :)). Here is the script, and use JSONLITERAL.stringify. Also, this method saves extra bytes from the removing the quotes, I use to send data across the websocket pipe. Might not seem like a lot of bytes saved from shredding off the quotations, but if there is a lot of stuff being parsed, it will help.

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