“Our API Is Slow” – Performance Fix & Optimization Solutions (Django REST / FastAPI)
Targeted API performance fixes for Django REST and FastAPI with measurable speed improvements.
See How We Build for Complex BusinessesA slow API is not just a backend inconvenience. It directly affects user experience, mobile responsiveness, dashboard reliability, and system integrations. As traffic grows and features expand, many APIs begin to degrade in performance. In most cases, the solution is not a complete rewrite. It is a structured performance audit followed by precise optimisations that remove bottlenecks and stabilise the system under load.
Who This Is For
We usually work best with teams who know building software is more than just shipping code.
This is for teams who:
Startups scaling backend traffic
SaaS platforms experiencing slow endpoints
Mobile-first applications with API latency issues
Teams using Django REST Framework or FastAPI
This may not fit for:
Projects without measurable performance issues
Static websites without API workloads
Teams planning full backend rewrites
Applications not using Python-based API frameworks
the real problem
APIs become slow when bottlenecks accumulate without visibility.
High response times, random timeouts, and database spikes often appear after new features are added. N+1 queries, inefficient serializers, blocking I/O, or missing indexes slowly reduce system performance. Teams may attempt infrastructure scaling without addressing the root cause. Without diagnostics and targeted fixes, performance issues persist, infrastructure costs increase, and user trust declines.
how this is usually solved
(and why it breaks)
common approaches
Scaling servers without profiling
Adding caching without bottleneck analysis
Ignoring database query optimisation
Treating performance as an infrastructure-only issue
Where these approaches fall short
Persistent high latency
Rising infrastructure costs
Unstable performance during peak traffic
Poor user experience and churn
Core Features & Capabilities
01
Comprehensive Performance Audit
Endpoint-level latency analysis, query profiling, and infrastructure review.
02
Database and Query Optimisation
Indexing, query restructuring, and elimination of N+1 patterns.
03
Serializer and Payload Tuning
Reduce over-fetching and optimise data serialization.
04
Async and Concurrency Improvements
Refactor blocking operations and enforce non-blocking I/O.
05
Caching and Background Processing
Redis-based caching and task offloading for heavy operations.
06
Benchmarking and Load Validation
Before-and-after performance benchmarks and load stability testing.
how we approach it
01
Profile endpoints and measure real latency
02
Identify root bottlenecks across layers
03
Apply targeted code and configuration fixes
04
Validate improvements with measurable benchmarks
How We Build at PySquad
We approach API optimisation as a structured engineering process. First, we measure. Then we isolate bottlenecks. Finally, we apply focused improvements across queries, serialization, async handling, caching, and infrastructure tuning. The result is measurable performance gain without unnecessary rewrites.
outcomes you can expect
2x to 10x faster API response times
Reduced timeouts and error rates
Lower database and infrastructure load
Improved frontend and mobile experience
Make your API fast again.
let's build yoursFrequently asked questions
No, most performance issues can be fixed without rewrites.
Often within days for common bottlenecks.
Yes, we work safely on production-grade APIs.
Yes, performance and stability are improved together.
Yes, benchmarks are part of the delivery.
About PySquad
PySquad works with businesses that have outgrown simple tools. We design and build digital operations systems for marketplace, marina, logistics, aviation, ERP-driven, and regulated environments where clarity, control, and long-term stability matter.
Our focus is simple: make complex operations easier to manage, more reliable to run, and strong enough to scale.
Strategic Solutions in This Domain
Integrated platforms and engineering capabilities aligned with this business area.
have an idea? lets talk
Share your details with us, and our team will get in touch within 24 hours to discuss your project and guide you through the next steps