Community & Careers questions and discussions

Editorial question137.5K views4,644 votes1 answer1,801 following

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Sequelize Pagination: Limit and Distinct behavior during Eager Loading

When implementing pagination in Sequelize (v6+), the limit and offset options are used to control the result set size. However, a specific complexity arises when utilizing include for one-to-many associations alongside these pagination constraints. To prevent the joined result set from inflating the row count, Sequelize often generates a subquery. When multi

nodejs pagination

sequelizeKavi Moss0 rep · 27 Mar 2024, 07:36 UTC

Editorial question51.5K views4,152 votes1 answer1 comment880 following

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Stale cached value returned after external file change in Memoized subroutine

Goal: guarantee that a memoized subroutine returns up‑to‑date data when the underlying external resource (e.g., a file or database) changes, including after a process fork where the child should see its own environment. Constraints: the Memoize module stores results keyed only by argument values and never expires entries automatically; after a fork the child

cache-invalidation

perl forkSky Echo0 rep · 27 Mar 2024, 02:39 UTC

Editorial question81K views4,141 votes0 answers636 following

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Cache Granularity vs Build Speed: Per‑Dependency vs Full Requirements Cache Invalidation

Goal Determine the optimal cache invalidation strategy for Read the Docs builds that balances build speed against the risk of serving stale documentation when dependencies change. Constraints & Uncertainty Read the Docs uses an internal hash of the requirements.txt to decide whether to reuse cached build artifacts. The hashing algorithm is not exposed, a

cache-invalidation requirements

readthedocsSky Atlas0 rep · 27 Mar 2024, 06:12 UTC

Editorial question121.9K views2,400 votes1 answer1 comment4,125 following

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Which strategy ensures idempotent PATCH operations without duplicate writes?

Goal Guarantee that a PATCH request applied via an idempotency key is performed only once, even when the client retries or sends concurrent identical requests. Constraints & Uncertainty PATCH is a partial update; the server may apply the patch multiple times if not guarded. Some APIs store the full request body and response for idempotency, others do not

patch idempotency apiSky Sage0 rep · 26 Mar 2024, 12:53 UTC

Editorial question115.9K views1,151 votes1 answer1 comment2,401 following

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Error: Permission denied @ apply2files - /usr/local/Cellar/

Goal: Allow Homebrew to write to /usr/local/Cellar without encountering the 'Permission denied @ apply2files' error while preserving system integrity and avoiding architecture‑specific conflicts. Constraints: Changing ownership with sudo chown can sidestep system protections and may interfere with other software that expects the original permissions; moving

ownership

homebrew cellarRin Cedar0 rep · 26 Mar 2024, 15:28 UTC

Editorial question82K views3,623 votes1 answer4,640 following

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What is the idle timeout for VS Code Remote - Tunnels server?

Goal Determine the idle timeout that causes the VS Code Remote - Tunnels server to shut down when a tunnel is inactive, so that low‑traffic development workloads can rely on predictable server availability without incurring unnecessary compute costs. Uncertainty The extension’s documentation does not specify the timeout value, and no user‑exposed setting exi

cost-saving idle-timeout remote-tunnelsRahul Indigo0 rep · 26 Mar 2024, 14:23 UTC

Editorial question147.4K views1,026 votes1 answer1,354 following

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Measuring dependency resolution bottlenecks in Poetry

Poetry utilizes a SAT-solver based resolver to manage dependencies, but the time spent during poetry lock can vary significantly based on the state of the local cache and the breadth of version constraints in pyproject.toml . When analyzing performance, it is necessary to distinguish between network-bound metadata retrieval and CPU-bound resolution logic. Be

python

poetry dependency-managementNeel Finch0 rep · 25 Mar 2024, 20:30 UTC

Editorial question63.8K views4,676 votes1 answer1 comment3,847 following

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Limits of NHibernate Second-Level Cache Concurrency Strategies for Mutable Data

The goal is to select a second‑level cache concurrency strategy for mutable entities that provides acceptable consistency while maximizing concurrent reads and writes in NHibernate. The documented strategies—read‑only, nonstrict‑read‑write, read‑write, and transactional—offer different locking and expiration guarantees, but the framework leaves the choice be

concurrency-strategy read-write second-level-cacheRahul Finch0 rep · 25 Mar 2024, 13:08 UTC

Editorial question135.8K views3,217 votes1 answer4,525 following

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createCanvas fails when target element is missing — slim build and hidden-tab loop decisions for a low-traffic sketch

I'm consolidating a low-traffic p5.js page and hit the documented setup failure: calling createCanvas(w, h) with a parent element that doesn't exist in the DOM yet throws an error from the core createCanvas function and halts sketch setup entirely. In my case the sketch is loaded in the document head while the container div is rendered later, so the parent v

createcanvas instance-mode slim-buildRey Dey0 rep · 25 Mar 2024, 14:05 UTC