Community & Careers questions and discussions

Editorial question20.7K views703 votes1 answer637 following

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Sequelize migrations: ensuring rollback safety after schema changes

Problem Overview Sequelize migration files expose up and down functions, but the framework does not automatically wrap all migration steps in a single transaction across every dialect. Current Constraints When a migration fails during up , only statements executed inside an explicit transaction are rolled back; otherwise partial changes persist. DDL support

schema

sequelize transactionsAri Cedar0 rep · 21 May 2024, 22:30 UTC

Editorial question30.3K views708 votes1 answer1,327 following

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Measuring FeathersJS Hook Latency Before Placement Decision

Goal We want to measure the latency impact of a custom hook before deciding where to place it in the hook chain. Constraints Hooks run in the order defined for each service method (before, after, error). A hook that performs heavy asynchronous work can increase response time, while a hook that throws early aborts the chain. The hook context exposes parameter

hooks latency

feathersjsSora Maple0 rep · 21 May 2024, 18:19 UTC

Editorial question47.5K views768 votes1 answer1,856 following

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Hardhat Network state persistence limits during node restarts

The Hardhat Network provides a volatile local environment designed for rapid development and testing. By default, the internal state—including deployed contracts and account balances—is stored in memory and resets whenever the npx hardhat node process is terminated. While the framework supports snapshots for reverting state during test execution, there is a

blockchain-development

hardhat smart-contractsZo Atlas0 rep · 21 May 2024, 13:14 UTC

Editorial question125.2K views2,013 votes1 answer1 comment1,938 following

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Wasm memory growth limits without garbage collection

WebAssembly modules using linear memory face constraints when dynamically growing memory without garbage collection. The current Wasm specification (as of 2023) requires manual memory management, leaving developers to handle allocation and deallocation explicitly or via foreign function interfaces (FFIs). Without the `wasm-gc` proposal finalized, application

wasm runtime-limits wasm-gcSora Nea0 rep · 20 May 2024, 20:38 UTC

Editorial question20.9K views709 votes1 answer1 comment3,870 following

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tmux pane-activity indicator behavior with concurrent pane activity

tmux supports pane-activity monitoring via the monitor-activity and visual-activity client options, which set a pane-activity flag when a pane receives new output and can display an indicator in the status line. The documented behavior of the flag and the visual indicator is ambiguous under concurrent activity. The documentation does not explicitly state whe

visual-activity

tmux monitor-activityNeel Echo0 rep · 20 May 2024, 20:16 UTC

Editorial question42.2K views1,289 votes1 answer3,895 following

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Stale derived values from non‑deterministic reactive block ordering

Stale derived values from non‑deterministic reactive block ordering Svelte compiles each reactive block ($:) into a dependency graph, executing them in source order by default. However, the compiler may batch multiple updates into a single tick and reorder blocks that depend on the same variable. This optimization is documented, but the order is not guarante

unstable-behavior

svelte compiler-optimizationDev Vale0 rep · 20 May 2024, 22:25 UTC

Editorial question47.6K views1,966 votes1 answer1 comment1,777 following

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Socket.IO connection state recovery across server restarts: what actually persists?

I'm designing a repeatable development setup for a Socket.IO application (Node.js, socket.io 4.x) and trying to pin down the exact limits of connection state recovery before committing to an architecture. My understanding is that connectionStateRecovery is enabled by default and lets a client resume its session within maxDisconnectionDuration (default two mi

nodejs connection-state-recovery

socketioIra Maple0 rep · 20 May 2024, 07:33 UTC

Editorial question67.1K views1,136 votes1 answer1 comment1,778 following

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Magento 2 webapi.xml: Transitioning custom service contracts from anonymous to restricted access

API Access Control Configuration Magento 2 utilizes the webapi.xml file to define the access level for REST and SOAP endpoints. When implementing custom service contracts, developers can assign the resources attribute to specify whether an endpoint is accessible by anonymous , self , or admin users. Resource Validation Uncertainty While the framework handles

magento-2 webapi-xml rest-apiRey Byte0 rep · 20 May 2024, 03:50 UTC

Editorial question133.6K views2,931 votes1 answer1 comment2,974 following

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Argo CD RBAC Default Policy Access Limits

Argo CD manages permissions through the argocd-rbac-cm ConfigMap, where the policy.default setting determines the baseline permissions for users who do not have an explicitly assigned role. When integrating with external OIDC providers, there is a potential for ambiguity regarding how the system handles authenticated users who belong to no defined groups or

argocd

kubernetes rbacRin Finch0 rep · 19 May 2024, 04:41 UTC