Server-side caching

Server-side caching is a project: we select and set up suitable levels — OPcache (PHP compilation), object cache, full-page cache for anonymous/semi-static pages, a reverse-proxy cache (Nginx FastCGI cache / Varnish), fragment cache; we set up rules, TTL and invalidation. Honestly about the main difficulty, this is key: 'the hard part is not writing the cache but invalidation' — serving a stale page/price/content is worse than not caching; the core of the work is correct cache clearing/updating on changes, and we test this thoroughly. Honestly about dynamics limits: full-page cache works great for anonymous and same-for-all pages; for personalized content (cart, account, per-user prices) full-page cache cannot be applied or only with exclusions/ESI — we cache safely and leave dynamics dynamic. Honestly about access and platform: server-side caching needs access to the server/config; on managed/shared hosting and builders some levels are unavailable — we honestly say what is possible. Honestly about risk: wrong rules = stale or content 'leaked' between users; we test thoroughly. Honestly about the link: server cache complements but does not replace query optimization (717) and in-memory data cache (719) — they often work together. Honestly about the effect: for cacheable content — a large measurable win (fast response, offload), we do NOT guarantee sales growth by itself. An important boundary: this is server-side caching, not CDN edge cache (714 — network-side), not the Redis data layer (719) and not content optimization. If the site is fully personalized, full-page cache is almost inapplicable — we say so honestly. Picture this: instead of 'generating a heavy page anew every time' the server serves a ready one from cache, without stale data. The base price starts from 18,000 ₽ per project; it depends on the levels and platform.

• Heavy pages are generated anew on every request.
• The server is overloaded under traffic, responses are slow.
• There is no full-page/object/OPcode cache.
• There is a cache but it shows stale content.

• Selecting cache levels (OPcache, object, full-page, proxy)
• Setting up Nginx FastCGI cache / Varnish if needed
• Cache rules, TTL and correct invalidation
• Exclusions for personalized content (cart/account)
• Thorough freshness testing (no stale/leaks)
• A 'before/after' report by response/load
• Accounting for hosting/platform constraints
• Handover and review with you

• A fast server response for cacheable pages
• Server offload under load
• Correct invalidation without stale content
• Dynamics stays dynamic (sales growth — not guaranteed)

• We clarify page types and hosting; collect server access
• We set up cache levels, rules, invalidation and exclusions
• We thoroughly test freshness, measure 'before/after', review with you

• Can you cache all pages in full?

  No. Full-page cache is good for anonymous/same pages; personalized content (cart, account, per-user prices) cannot be cached that way or only with exclusions/ESI. We cache safely and leave dynamics dynamic — otherwise the user would see someone else's or stale content.

• What is the hardest part?

  Invalidation — clearing the cache on changes. Serving a stale page/price is worse than not caching. So the core of the work is correct updating and tests, so as not to show old content or 'leak' between users.

• Is it possible on my hosting?

  Server-side caching needs access to the server/config. On managed/shared and builders some levels (Varnish, FastCGI cache) are unavailable — we honestly say what is realistically configurable. We do not guarantee sales growth by itself — it is speed and resilience.