用于桌面应用程序的本地 NoSQL 数据库
Local NoSQL database for desktop application
是否有类似于 Sqlite 的桌面应用程序的 NoSQL 数据库解决方案，其中数据库是用户计算机上的文件？该数据库将由桌面上使用的 nodejs 应用程序调用。
我使用 mongodb 本地实例。它非常容易设置。这是一个简单的设置指南 MongoDB
你也可以试试couchdb。有一个例子连同 electron
http://blog.couchbase.com/build-a-desktop-app-with-github-electron-and-couchbase
我看到这是一个老问题，但对您来说，一个较新的选择是 AceBase，它是一个快速、低内存、事务性、支持索引和查询的 NoSQL 数据库引擎和服务器 node.js 和浏览器。绝对是 SQLite 的一个很好的 NoSQL 替代品，并且非常易于使用：
const { AceBase } = require('acebase');
const db = new AceBase('mydb');
// Add question to database:
const questionRef = await db.ref('Whosebug/questions').push({
title: 'Local NoSQL database for desktop application',
askedBy: 'tt9',
date: new Date(),
question: 'Is there a NoSQL database solution for desktop applications similar to Sqlite where the database is a file on the user\'s machine? ..'
});
// questionRef is now a reference to the saved database path,
// eg: "Whosebug/questions/ky9v13mr00001s7b829tmwk1"
// Add my answer to it:
const answerRef = await questionRef.child('answers').push({
text: 'Use AceBase!'
});
// answerRef is now reference to the saved answer in the database,
// eg: "Whosebug/questions/ky9v13mr00001s7b829tmwk1/answers/ky9v5atd0000eo7btxid7uic"
// Load the question (and all answers) from the database:
const questionSnapshot = await questionRef.get();
// A snapshot contains the value and relevant metadata, such as the used reference:
console.log(`Got question from path "${questionSnapshot.ref.path}":`, questionSnapshot.val());
// We can also monitor data changes in realtime
// To monitor new answers being added to the question:
questionRef.child('answers').on('child_added').subscribe(newAnswerSnapshot => {
console.log(`A new answer was added:`, newAnswerSnapshot.val());
});
// Monitor any answer's number of upvotes:
answerRef.child('upvotes').on('value').subscribe(snapshot => {
const prevValue = snapshot.previous();
const newValue = snapshot.val();
console.log(`The number of upvotes changed from ${prevValue} to ${newValue}`);
});
// Updating my answer text:
await answerRef.update({ text: 'I recommend AceBase!' });
// Or, using .set on the text itself:
await answerRef.child('text').set('I can really recommend AceBase');
// Adding an upvote to my answer using a transaction:
await answerRef.child('upvotes').transaction(snapshot => {
let upvotes = snapshot.val();
return upvotes + 1; // Return new value to store
});
// Query all given answers sorted by upvotes:
let querySnapshots = await questionRef.child('answers')
.query()
.sort('upvotes', false) // descending order, most upvotes first
.get();
// Limit the query results to the top 10 with "AceBase" in their answers:
querySnapshots = await questionRef.child('answers')
.query()
.filter('text', 'like', '*AceBase*')
.take(10)
.sort('upvotes', false) // descending order, most upvotes first
.get();
// We can also load the question in memory and make it "live":
// The in-memory value will automatically be updated if the database value changes, and
// all changes to the in-memory object will automatically update the database:
const questionProxy = await questionRef.proxy();
const liveQuestion = questionProxy.value;
// Changing a property updates the database automatically:
liveQuestion.tags = ['node.js','database','nosql'];
// ... db value of tags is updated in the background ...
// And changes to the database will update the liveQuestion object:
let now = new Date();
await questionRef.update({ edited: now });
// In the next tick, the live proxy value will have updated:
process.nextTick(() => {
liveQuestion.edited === now; // true
});
我希望这对阅读本文的任何人有所帮助，AceBase 是这个街区的一个相当新的孩子，开始掀起波澜！
请注意，AceBase 还能够 运行 在浏览器中，并作为具有完整身份验证和授权选项的远程数据库服务器。可与服务器和其他客户端实时同步，掉线后重连。
有关更多信息和文档，请查看 AceBase at GitHub
如果你想快速尝试上面的例子，你可以copy/paste在RunKit编辑器中输入代码：https://npm.runkit.com/acebase
是否有类似于 Sqlite 的桌面应用程序的 NoSQL 数据库解决方案，其中数据库是用户计算机上的文件？该数据库将由桌面上使用的 nodejs 应用程序调用。
我使用 mongodb 本地实例。它非常容易设置。这是一个简单的设置指南 MongoDB
你也可以试试couchdb。有一个例子连同 electron
http://blog.couchbase.com/build-a-desktop-app-with-github-electron-and-couchbase
我看到这是一个老问题，但对您来说，一个较新的选择是 AceBase，它是一个快速、低内存、事务性、支持索引和查询的 NoSQL 数据库引擎和服务器 node.js 和浏览器。绝对是 SQLite 的一个很好的 NoSQL 替代品，并且非常易于使用：
const { AceBase } = require('acebase');
const db = new AceBase('mydb');
// Add question to database:
const questionRef = await db.ref('Whosebug/questions').push({
title: 'Local NoSQL database for desktop application',
askedBy: 'tt9',
date: new Date(),
question: 'Is there a NoSQL database solution for desktop applications similar to Sqlite where the database is a file on the user\'s machine? ..'
});
// questionRef is now a reference to the saved database path,
// eg: "Whosebug/questions/ky9v13mr00001s7b829tmwk1"
// Add my answer to it:
const answerRef = await questionRef.child('answers').push({
text: 'Use AceBase!'
});
// answerRef is now reference to the saved answer in the database,
// eg: "Whosebug/questions/ky9v13mr00001s7b829tmwk1/answers/ky9v5atd0000eo7btxid7uic"
// Load the question (and all answers) from the database:
const questionSnapshot = await questionRef.get();
// A snapshot contains the value and relevant metadata, such as the used reference:
console.log(`Got question from path "${questionSnapshot.ref.path}":`, questionSnapshot.val());
// We can also monitor data changes in realtime
// To monitor new answers being added to the question:
questionRef.child('answers').on('child_added').subscribe(newAnswerSnapshot => {
console.log(`A new answer was added:`, newAnswerSnapshot.val());
});
// Monitor any answer's number of upvotes:
answerRef.child('upvotes').on('value').subscribe(snapshot => {
const prevValue = snapshot.previous();
const newValue = snapshot.val();
console.log(`The number of upvotes changed from ${prevValue} to ${newValue}`);
});
// Updating my answer text:
await answerRef.update({ text: 'I recommend AceBase!' });
// Or, using .set on the text itself:
await answerRef.child('text').set('I can really recommend AceBase');
// Adding an upvote to my answer using a transaction:
await answerRef.child('upvotes').transaction(snapshot => {
let upvotes = snapshot.val();
return upvotes + 1; // Return new value to store
});
// Query all given answers sorted by upvotes:
let querySnapshots = await questionRef.child('answers')
.query()
.sort('upvotes', false) // descending order, most upvotes first
.get();
// Limit the query results to the top 10 with "AceBase" in their answers:
querySnapshots = await questionRef.child('answers')
.query()
.filter('text', 'like', '*AceBase*')
.take(10)
.sort('upvotes', false) // descending order, most upvotes first
.get();
// We can also load the question in memory and make it "live":
// The in-memory value will automatically be updated if the database value changes, and
// all changes to the in-memory object will automatically update the database:
const questionProxy = await questionRef.proxy();
const liveQuestion = questionProxy.value;
// Changing a property updates the database automatically:
liveQuestion.tags = ['node.js','database','nosql'];
// ... db value of tags is updated in the background ...
// And changes to the database will update the liveQuestion object:
let now = new Date();
await questionRef.update({ edited: now });
// In the next tick, the live proxy value will have updated:
process.nextTick(() => {
liveQuestion.edited === now; // true
});
我希望这对阅读本文的任何人有所帮助，AceBase 是这个街区的一个相当新的孩子，开始掀起波澜！
请注意，AceBase 还能够 运行 在浏览器中，并作为具有完整身份验证和授权选项的远程数据库服务器。可与服务器和其他客户端实时同步，掉线后重连。
有关更多信息和文档，请查看 AceBase at GitHub
如果你想快速尝试上面的例子，你可以copy/paste在RunKit编辑器中输入代码：https://npm.runkit.com/acebase