PHP 마이크로서비스에서 분산 쿼리 및 인덱싱을 구현하는 방법

function shard($id, $shardCount) {
    return crc32($id) % $shardCount;
}

$shardCount = 3;
$userId = 1001;
$shardId = shard($userId, $shardCount);

$databaseConfig = [
    ['host' => 'node1', 'user' => 'root', 'password' => 'password', 'database' => 'shard1'],
    ['host' => 'node2', 'user' => 'root', 'password' => 'password', 'database' => 'shard2'],
    ['host' => 'node3', 'user' => 'root', 'password' => 'password', 'database' => 'shard3'],
];

$connection = new PDO("mysql:host={$databaseConfig[$shardId]['host']};dbname={$databaseConfig[$shardId]['database']}", $databaseConfig[$shardId]['user'], $databaseConfig[$shardId]['password']);

// 查询用户信息
$userId = 1001;
$query = $connection->prepare("SELECT * FROM user WHERE id = :id");
$query->bindParam(':id', $userId);
$query->execute();

$user = $query->fetch(PDO::FETCH_ASSOC);

$redisConfig = [
    ['host' => 'node1', 'port' => 6379],
    ['host' => 'node2', 'port' => 6379],
    ['host' => 'node3', 'port' => 6379],
];

$redis = new Redis();
$redis->connect($redisConfig[$shardId]['host'], $redisConfig[$shardId]['port']);

// 建立索引
$userId = 1001;
$userName = 'John';

$redis->sAdd("index:user:name:$userName", $userId);

$userName = 'John';

// 获取索引中保存的用户ID
$userIdSet = $redis->sMembers("index:user:name:$userName");

// 查询用户信息
$query = $connection->prepare("SELECT * FROM user WHERE id IN (" . implode(',', $userIdSet) . ")");
$query->execute();

$users = $query->fetchAll(PDO::FETCH_ASSOC);