How long should mDNS wait for a responses

Summary The question revolves around determining the appropriate wait time for mDNS responses in an Android application using the NsdManager library. The goal is to find the maximum time mDNS servers might need to respond, considering varying network conditions. Root Cause The root cause of the uncertainty lies in the variability of network conditions and … Read more

L1 data eviction to L2

Summary The need to evict a specific memory block from the L1 Data Cache to the L2 Cache without invalidating it from the cache hierarchy or forcing a write-back to main memory is a nuanced requirement in performance-critical applications. This article discusses the root cause of the challenge, why it’s difficult in real systems, and … Read more

2 debian machines, updated on same day different amount of updates

Summary The discrepancy in the number of updates between two Debian machines, both updated on the same day and running Docker with various containers, raises questions about the source of these differences. Despite having the same operating system and update procedure, one machine received 33 updates while the other received 74 updates. Root Cause The … Read more

Find node that is connected to a node

Summary The issue at hand involves retrieving a node connected to the input of an AnimationNodeOutput object within an AnimationNodeBlendTree in Godot using GDScript. This problem arises when programmatically creating animation trees and needing to access or manipulate specific nodes within the tree. Root Cause The root cause of the difficulty in finding a node … Read more

Error: SASL SCRAM-SERVER-FIRST-MESSAGE: client password must be a string (NestJS + TypeORM + Neon)

Summary The issue arises when attempting to connect to a PostgreSQL database hosted on Neon using NestJS, TypeORM, and the pg driver. Despite the connection string being correctly loaded from the .env file, the application throws an error indicating that the client password must be a string. This suggests that the password is being received … Read more

SwiftUI text fade transition not animating in iOS 16+ – how to animate text content changes? (2026)

Summary The issue at hand is related to animating text changes in SwiftUI, specifically with a fade transition, in iOS 16 and later. The current approach involves using the .transition(.opacity) modifier along with .id() to uniquely identify the text view and .animation() to specify the animation. However, the provided code does not produce the desired … Read more