phase 8
This commit is contained in:
Doar Mihai
@@ -0,0 +1,178 @@
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<?php
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namespace App\Services;
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use Illuminate\Support\Facades\Cache;
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class CacheService
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{
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// Cache durations (in seconds)
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const CACHE_JOB_LISTINGS = 300; // 5 minutes
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const CACHE_SEARCH_RESULTS = 600; // 10 minutes
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const CACHE_CATEGORIES = 3600; // 1 hour
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const CACHE_STATISTICS = 1800; // 30 minutes
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const CACHE_FILTER_OPTIONS = 3600; // 1 hour
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const CACHE_FEATURED_JOBS = 900; // 15 minutes
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/**
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* Generate cache key for job listings
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*/
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public function jobListingsKey(array $filters = [], int $page = 1, int $perPage = 20): string
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{
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ksort($filters);
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return 'jobs:list:' . md5(serialize($filters) . ":{$page}:{$perPage}");
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}
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/**
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* Generate cache key for search results
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*/
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public function searchResultsKey(array $filters = [], int $page = 1): string
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{
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ksort($filters);
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return 'jobs:search:' . md5(serialize($filters) . ":{$page}");
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}
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/**
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* Generate cache key for job details
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*/
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public function jobDetailsKey(int $jobId): string
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{
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return "job:details:{$jobId}";
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}
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/**
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* Generate cache key for categories
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*/
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public function categoriesKey(): string
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{
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return 'categories:all';
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}
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/**
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* Generate cache key for category jobs
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*/
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public function categoryJobsKey(int $categoryId, int $page = 1): string
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{
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return "category:{$categoryId}:jobs:{$page}";
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}
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/**
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* Generate cache key for statistics
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*/
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public function statisticsKey(): string
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{
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return 'stats:dashboard';
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}
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/**
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* Generate cache key for filter options
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*/
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public function filterOptionsKey(): string
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{
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return 'filters:options';
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}
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/**
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* Generate cache key for featured jobs
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*/
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public function featuredJobsKey(int $limit = 10): string
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{
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return "jobs:featured:{$limit}";
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}
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/**
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* Generate cache key for recent jobs
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*/
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public function recentJobsKey(int $days = 7, int $limit = 6): string
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{
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return "jobs:recent:{$days}:{$limit}";
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}
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/**
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* Clear job-related caches
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*/
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public function clearJobCaches(): void
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{
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Cache::tags(['jobs'])->flush();
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}
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/**
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* Clear category caches
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*/
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public function clearCategoryCaches(): void
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{
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Cache::tags(['categories'])->flush();
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}
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/**
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* Clear statistics caches
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*/
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public function clearStatisticsCaches(): void
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{
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Cache::forget($this->statisticsKey());
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}
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/**
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* Clear all application caches
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*/
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public function clearAllCaches(): void
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{
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Cache::flush();
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}
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/**
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* Remember with tags (for better cache management)
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*/
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public function rememberWithTags(array $tags, string $key, int $ttl, callable $callback)
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{
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return Cache::tags($tags)->remember($key, $ttl, $callback);
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}
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/**
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* Get cached value or store new one
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*/
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public function remember(string $key, int $ttl, callable $callback)
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{
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return Cache::remember($key, $ttl, $callback);
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}
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/**
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* Get from cache
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*/
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public function get(string $key, $default = null)
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{
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return Cache::get($key, $default);
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}
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/**
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* Put value in cache
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*/
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public function put(string $key, $value, int $ttl): bool
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{
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return Cache::put($key, $value, $ttl);
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}
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/**
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* Forget cache key
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*/
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public function forget(string $key): bool
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{
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return Cache::forget($key);
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}
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/**
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* Increment counter (useful for statistics)
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*/
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public function increment(string $key, int $value = 1): int
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{
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return Cache::increment($key, $value);
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}
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/**
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* Decrement counter
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*/
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public function decrement(string $key, int $value = 1): int
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{
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return Cache::decrement($key, $value);
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}
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}
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@@ -8,6 +8,9 @@ use Illuminate\Database\Eloquent\Builder;
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class JobSearchService
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{
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public function __construct(
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private CacheService $cacheService
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) {}
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/**
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* Search jobs with advanced filters
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*/
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@@ -188,36 +191,40 @@ class JobSearchService
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*/
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public function getFilterOptions(): array
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{
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return [
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'job_types' => [
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'full-time' => 'Full-time',
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'part-time' => 'Part-time',
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'contract' => 'Contract',
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'temporary' => 'Temporary',
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'internship' => 'Internship',
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'freelance' => 'Freelance',
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],
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'experience_levels' => [
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'entry' => 'Entry Level',
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'mid' => 'Mid Level',
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'senior' => 'Senior Level',
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'lead' => 'Lead',
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'executive' => 'Executive',
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],
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'posted_within' => [
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1 => 'Last 24 hours',
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7 => 'Last 7 days',
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30 => 'Last 30 days',
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90 => 'Last 3 months',
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],
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'sort_options' => [
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'date' => 'Most Recent',
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'date_asc' => 'Oldest First',
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'salary_desc' => 'Highest Salary',
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'salary_asc' => 'Lowest Salary',
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'title' => 'Title A-Z',
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'company' => 'Company A-Z',
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],
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];
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$cacheKey = $this->cacheService->filterOptionsKey();
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return $this->cacheService->remember($cacheKey, CacheService::CACHE_FILTER_OPTIONS, function () {
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// Get actual distinct values from database for job types and experience levels
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$jobTypes = Job::select('job_type')
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->whereNotNull('job_type')
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->distinct()
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->pluck('job_type')
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->toArray();
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$experienceLevels = Job::select('experience_level')
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->whereNotNull('experience_level')
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->distinct()
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->pluck('experience_level')
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->toArray();
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return [
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'job_types' => $jobTypes,
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'experience_levels' => $experienceLevels,
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'posted_within' => [
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1 => 'Last 24 hours',
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7 => 'Last 7 days',
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30 => 'Last 30 days',
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90 => 'Last 3 months',
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],
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'sort_options' => [
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'date' => 'Most Recent',
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'date_asc' => 'Oldest First',
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'salary_desc' => 'Highest Salary',
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'salary_asc' => 'Lowest Salary',
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'title' => 'Title A-Z',
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'company' => 'Company A-Z',
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],
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];
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});
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}
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}
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@@ -0,0 +1,195 @@
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<?php
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namespace App\Services;
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use Illuminate\Database\Eloquent\Builder;
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use Illuminate\Support\Facades\DB;
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class QueryOptimizationService
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{
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/**
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* Add eager loading constraints to prevent N+1 queries
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*/
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public function eagerLoadJobRelations(Builder $query): Builder
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{
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return $query->with([
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'source:id,name',
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'category:id,name,slug,icon',
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'jobLocation:id,city,state,country',
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]);
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}
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/**
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* Optimize job listing query
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*/
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public function optimizeJobListingQuery(Builder $query): Builder
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{
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return $query
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->select([
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'id',
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'title',
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'company',
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'location',
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'job_type',
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'experience_level',
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'salary_min',
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'salary_max',
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'salary_currency',
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'remote_allowed',
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'posted_at',
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'job_source_id',
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'job_category_id',
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'job_location_id',
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'created_at',
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])
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->with([
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'source:id,name',
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'category:id,name,slug,icon',
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'jobLocation:id,city,state,country',
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]);
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}
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/**
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* Analyze slow queries
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*/
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public function analyzeSlowQueries(int $threshold = 1000): array
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{
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// Enable query logging
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DB::enableQueryLog();
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// Get queries that took longer than threshold (in milliseconds)
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$queries = DB::getQueryLog();
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$slowQueries = array_filter($queries, function ($query) use ($threshold) {
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return ($query['time'] ?? 0) > $threshold;
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});
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return array_map(function ($query) {
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return [
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'query' => $query['query'],
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'bindings' => $query['bindings'],
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'time' => $query['time'] . 'ms',
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];
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}, $slowQueries);
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}
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/**
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* Get query explain plan
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*/
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public function explainQuery(string $sql, array $bindings = []): array
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{
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$explained = DB::select('EXPLAIN ' . $sql, $bindings);
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return array_map(function ($row) {
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return (array) $row;
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}, $explained);
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}
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/**
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* Optimize table (defragment and rebuild indexes)
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*/
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public function optimizeTable(string $table): void
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{
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DB::statement("OPTIMIZE TABLE {$table}");
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}
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/**
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* Analyze table statistics for query optimizer
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*/
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public function analyzeTable(string $table): void
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{
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DB::statement("ANALYZE TABLE {$table}");
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}
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/**
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* Get table size and index statistics
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*/
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public function getTableStats(string $table): array
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{
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$stats = DB::select("
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SELECT
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table_name,
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ROUND(((data_length + index_length) / 1024 / 1024), 2) AS size_mb,
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table_rows,
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ROUND((data_length / 1024 / 1024), 2) AS data_size_mb,
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ROUND((index_length / 1024 / 1024), 2) AS index_size_mb
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FROM information_schema.TABLES
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WHERE table_schema = DATABASE()
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AND table_name = ?
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", [$table]);
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return $stats ? (array) $stats[0] : [];
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}
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/**
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* Get index usage statistics
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*/
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public function getIndexStats(string $table): array
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{
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$stats = DB::select("
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SELECT
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index_name,
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column_name,
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seq_in_index,
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cardinality,
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index_type
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FROM information_schema.STATISTICS
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WHERE table_schema = DATABASE()
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AND table_name = ?
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ORDER BY index_name, seq_in_index
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", [$table]);
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return array_map(function ($row) {
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return (array) $row;
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}, $stats);
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}
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/**
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* Check for missing indexes based on slow queries
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*/
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public function suggestIndexes(string $table): array
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{
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$suggestions = [];
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// Get columns that are frequently used in WHERE clauses without indexes
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$unindexedColumns = DB::select("
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SELECT DISTINCT column_name
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FROM information_schema.COLUMNS
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WHERE table_schema = DATABASE()
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AND table_name = ?
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AND column_name NOT IN (
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SELECT column_name
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FROM information_schema.STATISTICS
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WHERE table_schema = DATABASE()
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AND table_name = ?
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)
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", [$table, $table]);
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foreach ($unindexedColumns as $column) {
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$suggestions[] = [
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'type' => 'missing_index',
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'table' => $table,
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'column' => $column->column_name,
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'suggestion' => "Consider adding an index on {$column->column_name}",
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];
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}
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return $suggestions;
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}
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/**
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* Chunk large queries to reduce memory usage
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*/
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public function chunkQuery(Builder $query, int $chunkSize, callable $callback): void
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{
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$query->chunk($chunkSize, $callback);
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}
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/**
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* Use cursor for memory-efficient iteration
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*/
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public function cursorQuery(Builder $query): \Illuminate\Support\LazyCollection
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{
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return $query->cursor();
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}
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}
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Reference in New Issue
Block a user