How to identify and solve web-scale problems

Some problems are good to have… but they’re still problems. A company that has web-scale problems is probably growing and innovating—but at a pace so rapid that the current infrastructure can’t keep up. Adding to the challenge is that companies don’t always know that they even have a web-scale problem. In this article I will … Read more

Decorator Pattern to Solve Integration Scenarios

When we are in the learning phase of some technology, we always find the cleanest scenarios and examples in books and tutorials. It is perfectly logical because then we have to grasp the very core of the concepts involved, and we don’t want to be confused by the imperfections coming from the real world. When … Read more

Will a Graph Database Solve Your Problem?

One of the greatest questions to consistently badger a developer is “what technology should I use?””. Days of thought and analysis determines which option(s) (from an growing number) best suits the need, manages volume and demand, plans for long-term strategy, simplifies/reduces support, and gets approved by colleagues and management. Those steps may even seem easy … Read more

python – Using sys.argv for webscraping, and trying run it through CMD console. I am new to this, adn dont knwo how to solve “NoneType” error. Using pycharm

import sys import requests import csv import os from bs4 import BeautifulSoup def main(): url = input_arguments()[0] filename = input_arguments()[1] header = summary_info(url) data = data_scraping(url) save_to_csv(filename, header, data) check_file(filename) def url_list(): url = “https://volby.cz/pls/ps2017nss/ps3?xjazyk=CZ” r = requests.get(url) soup = BeautifulSoup(r.text, “html.parser”) list_href = [] for index in range(1, 15): find = soup.find_all((“td”, {“headers”: f”{index}sa3″})) … Read more

rust – How to solve Docker Buildx Error on M1 Pro?

I was trying to build a Docker image for a Rust “helloworld” webapp in a Docker Multi platform image. However, my build for the linux/amd64 image always fail while the linux/arm64 build always succeed. My config: MacBook Pro 2021 M1 Pro 32GB RAM MacOS 12.4 Docker for Desktop 4.10.1 My src/main.rs is: use actix_web::{get, App, … Read more

How we’ll solve software supply chain security

Who owns software supply chain security? Developers? Or the platform and security engineering teams supporting them? In the past, the CIO, CISO, or CTO and their security team would decide which Linux distribution, operating system, and infrastructure platform the company would be getting its support contracts and security SLAs from. Today, developers do this all … Read more

nullpointerexception – One day all of my programs on processing written in java stoped working. How to solve these errors?

I am trying to run programs on processing I coded. They used to work fine, but one day they all stopped working and started showing the same error messages. the code below is one example. int cellSize = 10; float p0 = 50; float p1 = 25; float p2 = 0; float p3 = 0; … Read more

c# – Locating calling code when it is not listed in the call stack (to solve null reference exception)

I have the following error System.NullReferenceException HResult=0x80004003 Message=Object reference not set to an instance of an object. Source=DevExpress.Persistent.BaseImpl.EFCore.v22.1 StackTrace: at DevExpress.Persistent.BaseImpl.EFCore.AuditTrail.AuditDataItem.UpdateDefaultString(IEFCoreWeakReference objectForUpdate, EntityEntry entityEntry, Object key) in DevExpress.PersistentDevExpress.Persistent.BaseImpl.EFCoreAuditTrailAuditDataItem.cs:line 99 The complete call stack is DevExpress.Persistent.BaseImpl.EFCore.v22.1.dll!DevExpress.Persistent.BaseImpl.EFCore.AuditTrail.AuditDataItem.UpdateDefaultString(DevExpress.Persistent.BaseImpl.EFCore.IEFCreUpdateFrame object.EntryEntry.UpdateDefaultString) ) Line 99 C# DevExpress.Persistent.BaseImpl.EFCore.v22.1.dll!DevExpress.Persistent.BaseImpl.EFCore.AuditTrail.AuditDataItem.UpdatePersistentData(System.Collections.Generic.Express.Persistre.PakIRemistore.Devent.>) weakReferences) Line 63 C# DevExpress.Persistent.BaseImpl.EFCore.v22.1.dll!DevExpress.Persistent.BaseImpl.EFCore.AuditTrail.AuditDataContainer.AttachAuditData(Microsoft.EntityFrameworkCore.Express.BtextIbConist.73) .v22.1.dll!DevExpress.Persistent.BaseImpl.EFCore.AuditTrail.AuditDataContainer.SaveAuditData(Microsoft.EntityFrameworkCore.DbContext dbContext) Line 59 C# DevExpress.Persistent.CordImpl.Express2. istent.BaseImpl.EFCore.AuditTrail.AuditTrailService.AuditedDbContext_SavedChanges(object sender, Microsoft.EntityFrameworkCore.SavedChangesEventArgs … Read more