I’m writing a script for batch image processing that uses multiprocessing.Pool to run tasks in parallel. It works fine on Linux, but when I copy it to Windows, it freezes immediately. The number of python.exe processes skyrockets in Task Manager until the system runs out of memory. I didn’t wrap the script entry point with … Read more
There is no need to “learn” it. As you’ve noticed, its popularity is declining. Investing a great deal of time in this language will likely yield low returns. If you need it for work, spend a few hours getting familiar with the basic concepts. After all, you still need to review code generated by AI; … Read more
What universities teach nowadays is somewhat disconnected from industry demands. Enterprises work on practical, concrete projects. What you have learned is mostly technical fundamentals. Besides technical skills, you also need to grasp business knowledge to land a job. Here are several trending fields for your reference: 1. Robotics 2. Chip development 3. New energy vehicles … Read more
Our team enforces three hard rules for code reviews: First, `ctx` is always the first parameter and must not be stored as a struct field. Storing request-scoped values inside long-lived objects breaks cancellation signals. Use `WithCancelCause` in Go 1.21+ to carry cancellation reasons; on-call engineers will appreciate this during troubleshooting. Second, whoever calls `WithTimeout` must … Read more
When it comes to configuration refresh, the most frequent pitfall is “configuration changes not taking effect”. Follow this recommended troubleshooting sequence: 1. Verify the refresh pipeline First confirm whether `/actuator/refresh` is actually invoked (check actuator logs or add an interceptor for tracing). A common mistake is failing to expose the refresh endpoint via `management.endpoints.web.exposure.include`, or … Read more
Starting troubleshooting from “where the loss occurs” is more effective than discussing `acks` in general terms. It is recommended to locate issues by segmenting the pipeline: 1. Producer side: First verify whether it is a “false success” When `acks=0`, a successful `send()` response does not mean the broker has received the message. With `acks=1`, the … Read more
A common misconception about PG needs correcting first: `max_connections` is not better when set higher. Each PostgreSQL connection is a separate process. Even two or three hundred active connections can tank throughput purely due to context switching. It is not uncommon to see slower performance after raising it to 2000. For the application side, HikariCP’s … Read more
A calculated capacitive contribution of 99% at low scan rates almost certainly stems from flaws in the fitting procedure or data selection, rather than the material truly exhibiting near-pure capacitive behavior. The Dunn method is extremely sensitive to data quality at low scan rates, and a common systematic error can artificially inflate the result to … Read more
Large models (including various Agent frameworks) are growing increasingly capable. However, once they interface with the physical world — for example, controlling robotic arms or autonomous vehicles — safety safeguards implemented purely in software become extremely fragile. If the large model hallucinates, or falls victim to prompt injection attacks, it may bypass safety checks embedded … Read more
I’m building a small tool for batch processing tasks. The main process spins up multiple workers using `multiprocessing.Pool`. I want each worker to write its processing results into a shared dictionary, so the main process can aggregate everything at the end. But after execution, when the main process prints this dictionary, it is still empty … Read more