Proof
Case studies based on real production problems.
Examples of production infrastructure work we support, including performance improvements, migrations, infrastructure reviews, application stability, caching and DNS issues, backup restore failures and security hardening.
Production infrastructure work we support.
Each case study explains the business problem, the technical approach and the type of outcome we aim for when supporting production systems.
Selected case studies
Ten production problems we can help solve.
Use these case studies to understand how we approach common infrastructure, web stack, cloud and platform support requests, and which service route fits each situation.
AWS S3 AccessDenied errors breaking application uploads
Uploads failed after a restrictive bucket policy change overrode the application role. The fix required checking effective S3 permissions rather than IAM alone.
- AWS S3
- Hidden bucket policy deny
- AWS technical fix
Restoring Real Visitor IPs for Containerised Apps
A containerised application behind a host-level reverse proxy could not see the original visitor IP. The fix required checking forwarded headers, trusted proxy behaviour, routing and application logging together.
- Reverse proxy routing
- Real client IP forwarding
- Containerised app support
Docker Compose stack failing after migration due to volume permissions
A Docker Compose stack failed after migration because restored volumes were owned by the wrong user. The fix required tracing container UID/GID expectations and correcting mounted data safely.
- Docker volume permissions
- Wrong UID/GID after restore
- Production migration recovery
Kernel update triggered high load from Go-based monitoring
After a kernel update, the dockerd service showed high load and Go-based application containers were blamed. Disabling them did not help because the pressure was actually caused by Netdata monitoring, another Go-based service.
- Linux high load
- Kernel update and Go services
- Netdata monitoring diagnosis
AWS bill, security and backup risks found during an infrastructure review
Not every AWS problem starts with an outage. Some environments become expensive, inconsistent and hard to trust over time. This case study outlines how a review turns unclear cloud risk into a practical action plan.
- AWS review
- Cost, security and backup risks
- Practical action plan
MariaDB slow queries causing SaaS dashboard timeouts
Slow database queries can make a SaaS application unreliable even when the web server is still running. This case study outlines a careful approach to production database performance issues.
- MariaDB performance
- Slow queries and dashboard timeouts
- Database tuning
Python SaaS app returning 502 errors behind NGINX and Gunicorn
Intermittent 502 errors were traced past NGINX to Gunicorn workers being killed under memory pressure. The fix made worker recycling controlled, measurable and safe.
- Gunicorn worker drops
- Linux OOM killer
- Controlled worker recycling
Improving CDN hit rates for a custom web application
A custom web application can still put too much load on the origin when cache headers, CDN rules and application routes are not aligned. This case study outlines how we improve cache efficiency safely.
- CDN performance
- Cache hit rate and origin load
- Web app caching review
WordPress malware cleanup followed by security hardening
A compromised WordPress site can affect trust, search visibility and revenue. Cleanup is only part of the work; the site also needs the entry point reviewed and obvious hardening gaps addressed.
- WordPress security
- Suspicious redirects and risk
- Security review/fix
ERR_TOO_MANY_REDIRECTS caused by incorrect NGINX redirects
A website hit ERR_TOO_MANY_REDIRECTS after overlapping NGINX rules redirected the bare domain and www hostname back to each other.
- NGINX redirects
- Hostname redirect loop
- Fixed technical fix
Have a similar issue?
Send the stack, symptoms, urgency and recent changes. We will suggest whether it fits emergency support, a fixed technical fix, an infrastructure review or a project quote.
Keywords
Common production support themes
Examples of infrastructure issues where clear diagnosis, safe changes and practical handover matter.