Introduction to Swoole memory operations (Table)

This article mainly introduces the introduction of Swoole memory operation (Table), which has a certain reference value. Now I share it with everyone. Friends in need can refer to it

Usage:

//实例化表格，参数 int ： 最大行数
$table = new swoole_table(1024);
//设置表格字段  参数 （字段名：string ， 字段类型：int、float、string ， 长度：int）
$table->column('id',$table::TYPE_INT,4);
$table->column('name',$table::TYPE_STRING,64);
$table->column('price',$table::TYPE_INT,11);
//创建表格
$table->create();
//添加数据  两种方式
$table->set('iphoneX',['id'=>1,'name'=>'iphoneX','price'=>9999]);
$table['xiaomi'] = ['id'=>2,'name'=>"小米",'price'=>3339];

foreach ($table as $key => $value) {
    var_dump($value);
    echo PHP_EOL ;
}
//单独设置某字段自增 参数（'表名'，’字段名‘，’步长‘）
$table->incr('iphoneX','price',1000);
var_dump($table->get('iphoneX'));
//单独设置字段自减
$table->decr('xiaomi','price',1000);
var_dump($table->get('xiaomi'));
//删除某条数据
$table->del('xiaomi');
//判断数据是否存在
if(!$table->exist('xiaomi')){
    echo '不存在此字段';
}

Swoole memory table advantages:

• It is fast and a single thread can read and write 1 million times per second. An 8-core machine with 8 threads can support 4 million concurrent reads and writes per second

• Does not occupy IO resources

• No need to lock, swoole_table has built-in rows Lock optional, all operations are multi-thread/multi-process safe. The user layer does not need to consider data synchronization issues at all

Usage scenarios:

• Can be used to solve the problem of data sharing between multiple processes

*The swoole_table module is currently experimental and is not recommended for use in production environments. Please use the mature solution Redis/Apc/Yac as the data sharing layer

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