mongo-delta 增量同步两个mongodb的数据
npm install mongo-delta
//define schema
var Schema = require('mongoose').Schema;
var CatSchema = new Schema({
name: {type:String},
updatedAt: {type: Date, default: Date.now}
}, {versionKey: false,timestamps: true});
//mongo-delta options
var opts = {
src: 'mongodb://localhost:27017/test2',
dest: 'mongodb://localhost:27017/test1',
schemas : [
{name: 'Cat', schema: CatSchema} //transition this schema from src to dest
]
}
//start mongo-delta
var MongoDelta = require('./mongo-delta');
var delta = new MongoDelta(opts);
delta.startOne(function(err){
console.log('============sync data from A to B============');
cb(err);
});
- src 源数据库的url
- dest 目标数据库的url
- step 每次比较数据的时间片段长度，单位秒,默认是3600*12
- schemas 定义的schema，是个数组
- name shema的名称
- schema shema的定义
- timeField 时间字段名称，默认是updatedAt
- uFileds 需要更新的字段，如果不定义，默认是所有字段都更新
(The MIT License)
Copyright (c) by Tolga Tezel [email protected]
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.