Proven Results for UK Merchants
Real-world examples of how our Magento-optimised infrastructure solves performance, security, and scaling challenges.
Peak Load Performance: 300% Traffic Spike During Flash Sale
The Challenge
A UK fashion retailer experienced severe database locking during flash sales, causing abandoned carts and lost revenue. Their previous host couldn't handle concurrent checkout sessions.
Our Approach
We migrated to our Nginx + Varnish + Redis stack with NVMe storage. Varnish cached product pages while Redis handled sessions, eliminating database contention.
Stack Used
Measurable Results
- Sub-50ms TTFB achieved
- 300% traffic spike handled smoothly
- Zero checkout timeouts
- Cart abandonment reduced by 40%
Security Event: 50Gbps DDoS Attack Blocked in Minutes
The Challenge
An electronics retailer faced a massive botnet DDoS attack during their busiest weekend. Traditional WAF solutions were overwhelmed and blocked legitimate customers.
Our Approach
Sentinel Shield's adaptive response engaged immediately. Using sentinel-ipflood and sentinel-geo-report, we identified attack origins and applied surgical CSF blocks without affecting real shoppers.
Stack Used
Measurable Results
- Attack neutralised in 2 minutes
- Zero legitimate traffic blocked
- Full forensic JSON report delivered
- Lockdown Mode prevented resource exhaustion
Migration Success: Legacy Dedicated to Modern Cloud Stack
The Challenge
A B2B industrial supplies company ran Magento 1.9 on an aging dedicated server. Upgrade to Magento 2.4 required a complete infrastructure overhaul without disrupting orders.
Our Approach
Our migration team performed a parallel environment build, extensive testing, and coordinated DNS cutover during low-traffic hours. Cron schedules and custom integrations were preserved.
Stack Used
Measurable Results
- 120GB database migrated
- Complex cron schedule preserved
- DNS switch completed in under 5 minutes
- Zero orders lost during transition
Database Stability: Resolving Chronic Cron Lock Issues
The Challenge
A home goods retailer experienced daily cron failures—stuck indexers, duplicate jobs, and MySQL deadlocks. Their admin panel showed constant warnings about cron_schedule table bloat.
Our Approach
We deployed sentinel-cronwatch to monitor job execution and auto-unlock stuck processes. Redis moved session storage off disk, and NVMe storage accelerated index writes.
Stack Used
Measurable Results
- Cron failures eliminated
- Indexer runtime reduced by 80%
- Admin panel responsive again
- Automated monitoring via WHMCS dashboard
Bot Mitigation: Stopping Search Abuse and Scraping
The Challenge
A beauty retailer noticed OpenSearch becoming unresponsive during peak hours. Investigation revealed aggressive scraping bots hammering the search API, consuming resources meant for real customers.
Our Approach
sentinel-searchwatch detected the abusive query patterns. Combined with sentinel-session-leak analysis, we identified bot fingerprints and applied rate limiting without affecting legitimate users.
Stack Used
Measurable Results
- Bot traffic reduced by 95%
- OpenSearch response times normalised
- Real customer searches unaffected
- Ongoing protection via automated rules