How Varnish grace mode keeps a Hyva Magento storefront fast during cache expiry and backend slowness, why Magento’s hard tag bans bypass grace, and how soft purge serves stale content while revalidating.
How Magento’s native UPS, FedEx, and USPS carriers quote live shipping rates through collectRates, why the slowest carrier API slows checkout, and how timeouts, caching, and fallbacks keep checkout fast on Hyva.
Why a Hyva storefront’s compiled Tailwind CSS is too big: the production build, content globs that must scan parent and module templates, dynamic class stripping, safelists, and the Tailwind v4 change.
How to add custom GraphQL resolvers to Magento and Adobe Commerce: the schema file, the @resolver directive, the ResolverInterface class, cache identity classes, and batch resolvers to avoid N+1 on Hyva.
How to deploy Magento and Adobe Commerce with zero downtime using Deployer: the atomic symlink release model, shared paths for media and config, building outside the downtime window, and fast rollbacks.
How Alpine AJAX adds partial page updates to a Hyva Magento storefront: the x-target model, returning server-rendered HTML fragments, keeping customer-data sections in sync, and when it beats going headless.
Why the Magento price indexer is the slowest to run: how catalog_product_index_price multiplies by customer group and website, dimension modes for parallel reindex, the ACSD patch, and fixes for a stuck reindex.
How to warm Magento and Adobe Commerce full page cache after a deploy or flush: crawling the sitemap, warming high-traffic pages first, throttling, and avoiding the cold-cache spike that overwhelms PHP.
How Magento MSI Source Selection works: Source Priority vs Distance Priority, Google Maps vs offline geocodes, why orders split across sources, and how to write a custom SourceSelectionInterface algorithm.
How Adobe Commerce Category Permissions hide categories, prices, and add-to-cart by customer group, how Shared Catalog overrides them, and the navigation-cache fix a Hyva storefront needs to vary the menu safely.
How to add custom Fastly VCL snippets to Adobe Commerce Cloud safely: regular vs dynamic snippets, priority values, edge dictionaries and ACLs, the clone-and-activate workflow, and testing on Staging first.
How Magento and Adobe Commerce product alerts work: enabling back-in-stock and price drop emails, the catalog_product_alert cron, the registered-customer limit, rendering the form on Hyva, and deliverability.
