How to use HBase for data storage and query in Workerman

Workerman is a high-performance PHP socket framework, which is characterized by its ability to carry a large number of concurrent connections. Unlike traditional PHP frameworks, Workerman does not rely on web servers such as Apache or Nginx. Instead, it runs the entire application by itself by starting a PHP process. Workerman has extremely high operating efficiency and better load capacity.

At the same time, HBase is a distributed NoSQL database system that is widely used in the field of big data processing. The advantage of HBase is its strong horizontal scalability and unlimited expansion to handle massive data. Due to its extremely high scalability, HBase has become an integral part of the Hadoop ecosystem and has gradually become the first choice for large-scale data storage and processing.

This article will introduce how to use HBase for data storage and query in Workerman.

1. Installation and configuration of HBase

Before you start using HBase, you first need to install and configure HBase. Here we use the steps in the official documentation of HBase for installation and configuration.

1. Download HBase

Download the latest version of HBase from the official website of HBase, select hbase-2.2.4 version here.

2. Decompress HBase

Decompress the downloaded HBase package and move it to the specified directory.

tar -zxf hbase-2.2.4-bin.tar.gz
mv hbase-2.2.4 /usr/local/hbase

3. Modify the configuration file

Modify the HBase configuration file. The configuration file is located in the "/usr/local/hbase/conf" directory. Mainly including "hbase-env.sh", "hbase-site.xml", "regionservers", etc.

(1) Modify the hbase-env.sh file

Add the following content at the end of the file:

export JAVA_HOME=/usr/local/jdk1.8.0_211
export HBASE_MANAGES_ZK=false
export HBASE_HEAPSIZE=1024

The first line specifies the Java installation directory, the second line indicates not to use the HBase embedded ZooKeeper, and the third line sets the maximum heap of the HBase process Memory.

(2) Modify the hbase-site.xml file

Add the following content at the end of the file:

<name>hbase.rootdir</name>
<value>file:///usr/local/hbase/data</value>

> ;

Where "file:///usr/local/hbase/data" indicates the root directory of the specified HBase data storage.

(3) Modify the regionsservers file

Edit the file "/usr/local/hbase/conf/regionservers", add the local IP address to the file and save it.

4. Start HBase

Run the following command to start HBase:

cd /usr/local/hbase
./bin/start-hbase.sh

5. Verify whether HBase has started successfully

Run the following command to check whether HBase has started successfully:

./bin/status.sh

Output "HMaster" means HBase has been started successfully.

2. PHP HBase client installation

There are many open source packages for PHP HBase client to choose from, such as HBase-thrift, HBase-rest, etc. This article chooses to use the HBase-PHP library, which is a HBase1.0.0 protocol-compatible client implemented in pure PHP.

1. Install the HBase-PHP library

You can install the HBase-PHP library through Composer. Run the following command to install:

composer require rwgrier/HBase-PHP

2. Create an HBase connection

Call the constructor of the HBaseClient class to establish a connection:

require_once 'vendor/autoload.php';
use HBaseClientHBaseClient;
$client = new HBaseClient([
'host' => 'localhost',
'port' => 9090
]);

You need to specify the HBase address and port number to establish a connection.

3. Using HBase in Workerman

Using HBase in Workerman is also very simple. You only need to add the code for creating the HBase connection in the above steps to your own code. Here is a simple example:

use WorkermanWorker;
require_once DIR . '/vendor/autoload.php';
use HBaseClientHBaseClient;
// Create Workerman instance
$worker = new Worker();
// Establish HBase connection
$client = new HBaseClient([
'host' => 'localhost',
'port' => 9090
]);
$worker->onMessage = function ($connection, $data) use ($client) {
// Get data
$result = $client->get('mytable', 'row-key');
$row = current($result);
// Processing data
$value = $row-> ;getColumnValue('cf1:col1');
// Return data
$connection->send($value);
};
// Start the worker process
Worker:: runAll();

In the above example, we obtain the data in a table "mytable" by using HBase connection, and return the obtained data to the client connection. For more API usage of HBase, please see the HBase-PHP official documentation.

Summary

Using Workerman and HBase can easily achieve high performance and massive data storage, and realize real-time data query and processing. Workerman and HBase are both open source software. Their excellent performance and stability have been recognized by a large number of users and can meet the needs of large-scale applications. This article introduces the method of using Workerman with HBase for data storage and query. In actual development, it needs to be adjusted and optimized according to the actual situation.

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