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memdb.conf.js
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memdb.conf.js
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// Copyright 2015 The MemDB Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
// implied. See the License for the specific language governing
// permissions and limitations under the License. See the AUTHORS file
// for names of contributors.
'use strict';
/*
* MemDB config template
*
* Please modify it on your needs
*
* This is plain javascript, you can add any js code here, just export the config
*
* DO NOT modify it when any memdb shard is running
*/
module.exports = {
// *** global settings for all shards ***
// Global backend storage, all shards must connect to the same mongodb (or mongodb cluster)
backend : {
engine : 'mongodb', // should be 'mongodb'
url : 'mongodb://localhost/memdb', // mongodb connect string
},
// Global locking redis, all shards must connect to the same redis (or redis cluster)
locking : {
host : '127.0.0.1',
port : 6379,
db : 0,
},
// Data replication redis, one redis instance for each shard
// You can override this in shard settings to choice different slave for each shard
slave : {
host : '127.0.0.1',
port : 6379,
db : 0,
},
// Log settings
log : {
// Log file path, default ~/.memdb
path : process.env.HOME + '/.memdb/log',
// Log Level (one of 'ALL', 'TRACE', 'DEBUG', 'INFO', 'WARN', 'ERROR', 'FATAL', 'OFF')
// Please set to WARN on production
level : 'WARN',
},
// Promise settings
promise : {
// Enable long stack trace, disable it on production
longStackTraces : false,
},
// user for memdbcluster ssh login, default current user
// when start using memdbcluster, make sure you have ssh permission (without password) on all servers,
// and the memdb version, install folder, config files are all the same in all servers
user : process.env.USER,
// Collection settings for index
/* modify it on your need
collections : {
// Collection name
player : {
indexes : [
{
// Index keys
keys : ['areaId'],
// Value exclude from index. Values like '', -1 occurs too often, which can make the index too large.
// 'null' or 'undefined' is ignored by default.
valueIgnore : {
areaId : ['', -1],
},
},
{
// Index keys (compound index)
keys : ['deviceType', 'deviceId'],
// Unique constraint for the index
unique : true,
},
]
}
},
*/
// *** Shard specific settings ***
// This will override global settings on specifid shard
shards : {
// shardId
s1 : {
// server IP
host : '127.0.0.1',
// listen port
port : 31017,
// bind Ip
// DO NOT bind to localhost when deploy on multiple servers
// make sure servers can communicate with each other
bind : '0.0.0.0',
// Add any shard specific settings here
// slave : {
// host : '127.0.0.1',
// port : 6379,
// db : 1,
// },
},
// Add more shards
s2 : {
host : '127.0.0.1',
port : 31018,
},
// s3 : {
// host : '127.0.0.1',
// port : 31019,
// },
// s4 : {
// host : '127.0.0.1',
// port : 31020,
// },
},
// *** additional settings ***
// These settings are unstable and may change in later version
// Delay for flush changes to backend storage
// Set it to large value to improve performance if the data delay in backend storage is not an issue.
// persistentDelay : 600 * 1000, // number in ms, default 10 min. 0 indicates never
// Idle time before document is removed from memory.
// Larger value can improve performance but use more memory.
// Set it to large value if the documents accessed via this shard is limited.
// Do not access too many different documents in a short time, which may exhault memory and trigger heavy GC operation.
// idleTimeout : 1800 * 1000, // number in ms, default 30 min. 0 indicates never
// GC will be triggered when memory usage reach this limit
// GC can be very heavy, please adjust idleTimeout to avoid GC.
// memoryLimit : 1024, // number in MB, default 1024
// Disable redis replica, DO NOT turn on this in production.
// disableSlave : false, // default false
// Slow query time
// slowQuery : 2000, // number in ms. default 2000
// Turn on heapdump module (https://www.npmjs.com/package/heapdump)
// heapdump : false, // default false
};