Prometheus在PHP應(yīng)用中的監(jiān)控指標(biāo)

PHP
小樊
85
2024-09-07 16:49:18
欄目: 編程語言

在 PHP 應(yīng)用程序中使用 Prometheus 進(jìn)行監(jiān)控時(shí),可以收集和跟蹤多種指標(biāo)

  1. 請(qǐng)求持續(xù)時(shí)間:衡量每個(gè) HTTP 請(qǐng)求的持續(xù)時(shí)間。這有助于了解哪些請(qǐng)求可能需要優(yōu)化或調(diào)查性能瓶頸。
$histogram = $registry->getOrRegisterHistogram(
    'http_request_duration_seconds',
    'The duration of HTTP requests processed by the application.',
    ['method', 'route']
);

$startTime = microtime(true);
// ...處理請(qǐng)求...
$duration = microtime(true) - $startTime;

$histogram->observe($duration, ['GET', '/some/route']);
  1. 內(nèi)存使用情況:監(jiān)控 PHP 腳本執(zhí)行期間的內(nèi)存使用情況。這有助于發(fā)現(xiàn)內(nèi)存泄漏或高內(nèi)存消耗的操作。
$gauge = $registry->getOrRegisterGauge(
    'memory_usage_bytes',
    'The amount of memory used by the application.'
);

// ...執(zhí)行一些操作...

$memoryUsage = memory_get_usage();
$gauge->set($memoryUsage);
  1. 異常和錯(cuò)誤計(jì)數(shù):統(tǒng)計(jì)應(yīng)用程序中拋出的異常和錯(cuò)誤數(shù)量。這有助于了解應(yīng)用程序的健康狀況和潛在問題。
$counter = $registry->getOrRegisterCounter(
    'exceptions_total',
    'The total number of exceptions thrown by the application.',
    ['type']
);

try {
    // ...執(zhí)行可能拋出異常的代碼...
} catch (Exception $e) {
    $counter->inc(['MyCustomException']);
}
  1. 數(shù)據(jù)庫查詢持續(xù)時(shí)間:監(jiān)控?cái)?shù)據(jù)庫查詢的持續(xù)時(shí)間。這有助于識(shí)別慢查詢和性能瓶頸。
$histogram = $registry->getOrRegisterHistogram(
    'db_query_duration_seconds',
    'The duration of database queries executed by the application.',
    ['query']
);

$startTime = microtime(true);
// ...執(zhí)行數(shù)據(jù)庫查詢...
$duration = microtime(true) - $startTime;

$histogram->observe($duration, ['SELECT * FROM users']);
  1. 緩存命中率:監(jiān)控緩存的命中率。這有助于確定緩存策略是否有效,以及是否需要調(diào)整緩存配置。
$cacheHits = $registry->getOrRegisterCounter('cache_hits_total', 'The total number of cache hits.');
$cacheMisses = $registry->getOrRegisterCounter('cache_misses_total', 'The total number of cache misses.');

if ($cache->has($key)) {
    $cacheHits->inc();
} else {
    $cacheMisses->inc();
}
  1. 隊(duì)列長度:監(jiān)控任務(wù)隊(duì)列或消息隊(duì)列的長度。這有助于了解隊(duì)列的工作負(fù)載和待處理任務(wù)的數(shù)量。
$gauge = $registry->getOrRegisterGauge(
    'queue_length',
    'The current length of the task queue.'
);

// ...獲取隊(duì)列長度(例如,從數(shù)據(jù)庫或緩存中)...
$queueLength = getQueueLength();

$gauge->set($queueLength);

這些只是 Prometheus 在 PHP 應(yīng)用程序中的一些基本監(jiān)控指標(biāo)。根據(jù)應(yīng)用程序的需求和特點(diǎn),可以根據(jù)需要收集更多指標(biāo)。在實(shí)施監(jiān)控時(shí),請(qǐng)確保遵循最佳實(shí)踐,例如使用有意義的指標(biāo)名稱和標(biāo)簽,以便于分析和警報(bào)。

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