Tag: WebDev

I am currently hosting a web application on a VPS with shared CPU and memory resources. The application performs well under normal load, but I occasionally experience performance degradation during traffic spikes. I am considering migrating to a dedicated server with dedicated hardware resources. What are the practical indicators that it is time to move from a VPS to a dedicated server? Is this decision typically based on: CPU/RAM saturation Disk I/O bottlenecks Network contention in shared VPS environments Traffic volume thresholds Cost efficiency at scale

Good day I am trying to develop a .Net Maui app for doing dose calculations for radiotherapy patients. I just started and initially started developing it with the event-driven approach, but decided that I should rather try and follow the MVVM approach. This is a Windows app. The problem I have is that the Patient name and id entry fields do not update when I return from the import page. I have removed all the unnecessary code in order to not upload long code here. In memory I have set the patient name at start to Mickey Mouse and the ID to 1. That displays when the app is run. When I return from the ImportPage I manually change the name to Peters and the ID to 2 just to test, but the entry fields are not updated. I feel I am overlooking something, but cannot see what. I am still new to .Net Maui and MVVM. My HomePage.xaml. Here I am binding to the patient name and ID to the two entry fields. <?xml version="1.0" encoding="utf-8&qu

What is the best roadmap to become a professional DevOps engineer, and what skills, tools, and technologies should I focus on learning?

I’m currently working on an Angular project and trying to figure out the best way to set up forms in Angular 18–20. Right now I’m using Reactive Forms, but I’ve seen some discussions about the upcoming Signals-based forms. Since it’s not fully released yet, I’m a bit confused about what approach is considered “best practice” today—especially if we want something that won’t be hard to migrate later. For example: How do you usually structure complex forms (nested FormGroup / FormArray)? Do you keep validation and business logic inside the component, or separate it somewhere else? Any tips for handling large forms without making them messy or hard to maintain? Is it worth preparing for Signals now, or better to just stick with Reactive Forms for now? If you have any good articles, examples, or just want to share how you usually handle this, that would really help 🙏

I’m a safety manager at a bus company & I often have drivers dispute their speeding violations on our onboard telematics system. Is there a way for me to lookup a speed limit of a road, like a map layer? Currently, I have to use street view and scroll until I see a speed limit sign. Would love to know of a simpler and more efficient way to do this.

I have a simple metric, let's call it count for right now, the metric is emitted by a process that starts and stops periodically. I noticed that if a start + stop occurs quickly (effectively a restart of the process) then the old data and the new data overlap and double up. My Idea to solve this would be to include a start_time label on the data and whenever multiple values are present for a given time choose the one with the largest start_time value. Is this possible with PromQL?

I am trying to write a multithreaded program in C. In the minimal example, one thread does some math and creates an array, while another thread accepts some quantity of calculated data and does something with it -- eventually sending it to sound synthesis, but that's not in the minimal example. I can't get the sequence of locking/unlocking a mutex around the section that modifies the shared buffer to work as I wish. In this example, I simplified it such that the 'buffer' just has numbers from 1..10000 in it, then the 'producer' just changes the pointer to the section of the buffer to be processed, and I don't even do any processing apart from probing the value to see what's been passed to the consumer thread. Following some other advice on here, I've included pthread_cond_wait and put it in a loop checking that the producer has actually filled in the data (via 'ready' variable in the shared structure), but while I understand it's necessary to do this, I

I have developed an application that needs to quickly find bits in a rather sparse bitset. Ideally I would use __builtin_ffsll() or ffsll(), but I can manage with ffs() too, I just unnecessarily need to call it twice per uint64_t. I would like to ensure my application compiles on any POSIX, even if the C compiler lacks __builtin_ffsll() (the presence of which I can detect using GCC existence and version checks and __has_builtin for recent GCC and not-so-recent clang versions). The GNU/Linux man page tells that ffs() is available with _XOPEN_SOURCE at least 700 and with _POSIX_C_SOURCE earlier than 200809L. So according to the glibc folks, it was part of base POSIX but for some reason moved to X/Open system interface in POSIX 2008. According to

I wonder if it is okay to use the same Room db in Activity and Remote Service. Since the Service is remote it resides in a separate process. Is it okay to open the same sqlite db file simultaneously from the Remote Service and the Activity itself? Whether their operations must be manually synchronized via some sort of IPC ? I mean imagine two writes at the same time initiated by the Remote Service and the Acitivity. Is it error prone or it is handled properly by the Room itself ?

Respected users, When a template function is called then during template argument deduction and substitution (which happens before overload resolution) of function template, do function parameter which are class template specialization get implicitly instantiated ? Consider example code : template<typename T> struct foo{ using foo_type = int; } ; template<typename T> struct boo { using boo_type = typename T::foo_type; } ; template <typename T > void someFunc(boo<T>) {} template <typename T > typename T::boo_type someFunc(T) {} So if I were to call such function someFunc(boo<foo<int>>()); , which of the following event can lead to such implicit instantiation? During template argument deduction (but it's just pattern matching between parameter type and argument type according to answers on SO, right?) During template argu