Streaming pagination for leveldb.
With posts in your db like this, with monotonically ascending ids/timestamps in their keys:
post!100 = post!100 body
post!101 = post!101 body
post!102 = post!102 body
...You can paginate in a streaming manner like this:
var level = require('level');
var paginate = require('level-paginate');
var db = levelup(__dirname + '/db');
console.log('page 0:');
paginate(db, 'post', { page : 0, num : 10 })
.on('data', console.log)
.on('end', function () {
console.log('\npage 1:');
paginate(db, 'post', { page : 1, num : 10 })
.on('data', console.log);
});And the output is:
$ node example/simple.js
page 0:
post!119 body
post!118 body
post!117 body
post!116 body
post!115 body
post!114 body
post!113 body
post!112 body
post!111 body
post!110 body
page 1:
post!109 body
post!108 body
post!107 body
post!106 body
post!105 body
post!104 body
post!103 body
post!102 body
post!101 body
post!100 bodyPaginate over all key/value pairs in db that start with prefix.
Possible options are:
-
page: The page that you want. Defaults to0. -
num: The amount of key/value pairs to get. Defaults to10.
With npm do
$ npm install level-paginate(MIT)
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