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02. THEME ARCHITECTURE
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04. WP_QUERY MASTERCLASS: CUSTOM SLUGS & METADATA FILTERING
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ClientReady Academy • ID: CR-8839 • Aoun Muhammad
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02. THEME ARCHITECTURE • LESSON 04
04. WP_Query Masterclass: Custom Slugs & Metadata Filtering
Lesson Attachments
Why Direct SQL Queries Hurt WordPress Performance
When scaling client applications to handle 100,000+ custom post types, leveraging WP_Query correctly ensures transient caching and sanitization layers are respected. In this lesson, we break down complex nested relational queries via meta_query and tax_query without crashing database throughput.
inc/queries/client-portfolio-query.php
<?php
// Construct production-ready WP_Query for multi-tax filter
$query_args = [
'post_type' => 'client_case_study',
'posts_per_page' => 12,
'post_status' => 'publish',
'meta_query' => [
'relation' => 'AND',
[
'key' => '_project_budget_tier',
'value' => 'enterprise',
'compare' => '=',
],
],
'no_found_rows' => true, // Skip SQL_CALC_FOUND_ROWS for 4x faster execution
];
$portfolio_query = new WP_Query($query_args);
if ($portfolio_query->have_posts()) :
while ($portfolio_query->have_posts()) : $portfolio_query->the_post();
get_template_part('template-parts/content', 'portfolio-card');
endwhile;
wp_reset_postdata();
endif;
?>