Custom Database Engine for E‑commerce Inventory & Cart

E‑commerce at scale often hits limits with a single relational DB for inventory and cart. A custom engine for the hot path can keep latency low and avoid oversell.

High read/write volume, need for consistency (don’t oversell), and low latency for “add to cart” and “check stock.” Generic SQL can lock under load; caching introduces consistency issues. A purpose-built layer can do atomic decrement and cart updates with predictable latency.

• •Inventory – Atomic reserve/release, versioning or conditional updates to avoid oversell. Optional separation of “hot” SKUs in the custom engine and the rest in a DB.
• •Cart – Fast read/write by user/session; optional TTL and merge with account cart. Session store or dedicated cart store.

When you have high concurrency (e.g. flash sales, big campaigns) and your current DB or cache layer can’t keep p99 low and consistent without overspending. At Hendoi we build custom database engines (VeloxDB) for USA, Canada, and Chennai. Contact us for a free quote.