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Django 5.1.6 asgiref sync_to_async Deadlocks With thread_sensitive=True
Event date: February 5, 2026 — django/django 5.1.6 In this post What actually deadlocks in Django 5.1.6 Why does thread_sensitive=True ship as the default? How...
Profiling Django 5.2 async_unsafe() Warnings With py-spy 0.4.1
Originally reported: April 2, 2026 — django/django 5.2 A SynchronousOnlyOperation firing once every 400 requests under Django 5.2 is the async bug that green test...
Debugging Django Microservices With OpenTelemetry Distributed Traces
Overview How Trace Context Propagation Works Across Django Services Instrumenting Django With opentelemetry-instrumentation-django 0.48b0 Adding Custom Spans to Pinpoint Business Logic Failures Why Logs-Only Debugging...
Catching SQLAlchemy N+1 Queries With Python Logging Before Production
The short version: SQLAlchemy's built-in logging, its event system, and third-party libraries like nplusone each offer a different path to catching N+1 queries before they...
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Django 5.1.6 asgiref sync_to_async Deadlocks With thread_sensitive=True
Event date: February 5, 2026 — django/django 5.1.6 In this post What actually deadlocks in Django 5.1.6 Why does thread_sensitive=True ship as the default? How...
Profiling Django 5.2 async_unsafe() Warnings With py-spy 0.4.1
Originally reported: April 2, 2026 — django/django 5.2 A SynchronousOnlyOperation firing once...
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Django 5.1.6 asgiref sync_to_async Deadlocks With thread_sensitive=True
Event date: February 5, 2026 — django/django 5.1.6 In this post What actually deadlocks in Django 5.1.6 Why does thread_sensitive=True ship as the default? How...
Profiling Django 5.2 async_unsafe() Warnings With py-spy 0.4.1
Originally reported: April 2, 2026 — django/django 5.2 A SynchronousOnlyOperation firing once every 400 requests under Django 5.2 is the async bug that green test...
Debugging Django Microservices With OpenTelemetry Distributed Traces
Overview How Trace Context Propagation Works Across Django Services Instrumenting Django With opentelemetry-instrumentation-django 0.48b0 Adding Custom Spans to Pinpoint Business Logic Failures Why Logs-Only Debugging...
Catching SQLAlchemy N+1 Queries With Python Logging Before Production
The short version: SQLAlchemy's built-in logging, its event system, and third-party libraries like nplusone each offer a different path to catching N+1 queries before they...
Profiling React Suspense Waterfall Renders with DevTools Flame Graph
In this article What does a Suspense waterfall look like in the React DevTools flame graph? Why do nested Suspense boundaries create sequential fetch waterfalls?...
Tracing Async Python Bugs With aiomonitor in Production
A coroutine that never awaits back is the worst kind of production bug: the process is alive, the health check returns 200, but one request...
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Django 5.1.6 asgiref sync_to_async Deadlocks With thread_sensitive=True
Event date: February 5, 2026 — django/django 5.1.6 In this post What...
Profiling Django 5.2 async_unsafe() Warnings With py-spy 0.4.1
Originally reported: April 2, 2026 — django/django 5.2 A SynchronousOnlyOperation firing once...
Django 5.1.6 asgiref sync_to_async Deadlocks With thread_sensitive=True
Event date: February 5, 2026 — django/django 5.1.6 In this post What actually deadlocks in Django 5.1.6 Why does thread_sensitive=True ship as the default? How...
Profiling Django 5.2 async_unsafe() Warnings With py-spy 0.4.1
Originally reported: April 2, 2026 — django/django 5.2 A SynchronousOnlyOperation firing once every 400 requests under Django 5.2 is the async bug that green test...
Debugging Django Microservices With OpenTelemetry Distributed Traces
Overview How Trace Context Propagation Works Across Django Services Instrumenting Django With opentelemetry-instrumentation-django 0.48b0 Adding Custom Spans to Pinpoint Business Logic Failures Why Logs-Only Debugging...
Catching SQLAlchemy N+1 Queries With Python Logging Before Production
The short version: SQLAlchemy's built-in logging, its event system, and third-party libraries like nplusone each offer a different path to catching N+1 queries before they...
Profiling React Suspense Waterfall Renders with DevTools Flame Graph
In this article What does a Suspense waterfall look like in the React DevTools flame graph? Why do nested Suspense boundaries create sequential fetch waterfalls?...