@abetomo/vsq 中文文档教程
Very-simple-queue
非常简单的队列。 还有一个非常简单的 SQS 之类的队列。
install
% npm install @abetomo/vsq
Command example
Use it like a queue
% vsq push -d /tmp/example.db -v 'value1'
% vsq push -d /tmp/example.db -v 'value2'
% vsq shift -d /tmp/example.db
value1
% vsq shift -d /tmp/example.db
value2
Use it like a stack
% vsq push -d /tmp/example-stack.db -v '{"key": "value1"}'
% vsq push -d /tmp/example-stack.db -v '{"key": "value2"}'
% vsq pop -d /tmp/example-stack.db
{"key": "value2"}
% vsq pop -d /tmp/example-stack.db
{"key": "value1"}
Use it like a SQS
% vsq send -d /tmp/example-sqs.db -v 'value1'
150390342-39bb8a1f-dd3c-488f-9ac8-f0b8383d9ae5
% vsq send -d /tmp/example-sqs.db -v 'value2'
150390342-1c95158b-381d-4735-b888-01e49f22bc3c
% vsq receive -d /tmp/example-sqs.db
{
"id": "150390342-1c95158b-381d-4735-b888-01e49f22bc3c",
"body": "value2"
}
% vsq delete -d /tmp/example-sqs.db -i "150390342-1c95158b-381d-4735-b888-01e49f22bc3c"
true
% vsq receive -d /tmp/example-sqs.db
{
"id": "150390342-39bb8a1f-dd3c-488f-9ac8-f0b8383d9ae5",
"body": "value1"
}
Usage example of Node.js API
Simple queue and stack
File
const VerySimpleQueue = require('@abetomo/vsq')
const vsq = new VerySimpleQueue()
const dbFile = '/tmp/test.db'
vsq.load(dbFile)
console.log('[unshift] data size: %s', vsq.unshift('value1'))
console.log('[unshift] data size: %s', vsq.unshift('value2'))
console.log('[push] data size: %s', vsq.push('value3'))
console.log('[push] data size: %s', vsq.push('value4'))
console.log('[shift]: %s', vsq.shift())
console.log('[shift]: %s', vsq.shift())
console.log('[pop]: %s', vsq.pop())
console.log('[pop]: %s', vsq.pop())
/*
* Result:
*
* [unshift] data size: 1
* [unshift] data size: 2
* [push] data size: 3
* [push] data size: 4
* [shift]: value2
* [shift]: value1
* [pop]: value4
* [pop]: value3
*/
Memory
const VerySimpleQueue = require('@abetomo/vsq')
const vsq = new VerySimpleQueue()
vsq.load(':memory:') // Specify ':memory:'
console.log('[unshift] data size: %s', vsq.unshift('value1'))
console.log('[unshift] data size: %s', vsq.unshift('value2'))
console.log('[push] data size: %s', vsq.push('value3'))
console.log('[push] data size: %s', vsq.push('value4'))
console.log('[shift]: %s', vsq.shift())
console.log('[shift]: %s', vsq.shift())
console.log('[pop]: %s', vsq.pop())
console.log('[pop]: %s', vsq.pop())
/*
* Result:
*
* [unshift] data size: 1
* [unshift] data size: 2
* [push] data size: 3
* [push] data size: 4
* [shift]: value2
* [shift]: value1
* [pop]: value4
* [pop]: value3
*/
SQS like
const VerySimpleQueueLikeSQS = require('@abetomo/vsq').SQS
const vsq = new VerySimpleQueueLikeSQS()
const dbFile = '/tmp/test.sqs.db'
vsq.load(dbFile)
console.log('[send] data ID: %s', vsq.send('value1'))
console.log('[send] data Id: %s', vsq.send('value2'))
const data = vsq.receive()
console.log('[receive]: %s', JSON.stringify(data))
console.log('[delete]: %s', vsq.delete(data.id))
console.log('[receive]: %s', JSON.stringify(vsq.receive()))
/*
* Result:
*
* [send] data ID: 150390381-43b055bb-cccb-446a-a460-07d4a35697bc
* [send] data Id: 150390381-52795da6-0528-46c0-a0bd-8c535b292dc8
* [receive]: {"id":"150390381-43b055bb-cccb-446a-a460-07d4a35697bc","body":"value1"}
* [delete]: true
* [receive]: {"id":"150390381-52795da6-0528-46c0-a0bd-8c535b292dc8","body":"value2"}
*/
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