Community & Careers questions and discussions

Editorial question30.3K views3,871 votes0 answers2,811 following

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Offset/Limit Pagination or Keyset Pagination for Streaming Large JSON Arrays

Goal: Choose a pagination model to expose in a public API that can stream large JSON arrays without loading the whole document into memory. Constraints: The implementation must keep memory usage low, avoid excessive token‑skipping latency, remain familiar to clients accustomed to SQL‑style offset/limit, and work even when the source JSON lacks a natural sort

offset-limit streaming

jsonLax River0 rep · 27 May 2024, 23:55 UTC

Editorial question120.9K views3,196 votes1 answer1 comment1,810 following

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Replication‑factor misconfiguration blocks writes after node failure

Goal The cluster should continue to accept writes even when a node goes down, maintaining the configured replication‑factor. Constraints & Uncertainty Replication‑factor is set to 3 but the cluster only has 2 active nodes. The write operation blocks and errors appear in the logs. It is unclear whether the failure is due to the replication‑factor exceedin

replication high-availability

aerospikeRin Finch0 rep · 26 May 2024, 14:59 UTC

Editorial question126.8K views3,858 votes0 answers734 following

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MATLAB Mocking Framework: Unresolved Decision on Stubbing webread in Integration Tests

Goal We need to validate an integration that calls webread without exposing production credentials or relying on external services during unit tests. Constraints The documented matlab.mock system creates mocks only from classes; free functions such as webread are not directly interceptable. A wrapper or interface is the typical workaround, but the exact appr

mocking unit-test

matlabLax Finch0 rep · 26 May 2024, 17:26 UTC

Editorial question73.4K views2,648 votes1 answer915 following

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Cucumber JVM parallel execution: hook thread-affinity guarantee for scenario-scoped @Before/@After

Thread-affinity uncertainty for scenario hooks When running Cucumber JVM scenarios in parallel via JUnit 5's parallel execution or Cucumber's --threads option, reliable management of thread-local resources such as WebDriver instances or database connections depends on whether @Before and @After hooks execute on the same thread as their associated scenario. T

junit5 hooks cucumber-jvmRahul Echo0 rep · 26 May 2024, 13:52 UTC

Editorial question129K views3,710 votes1 answer1 comment4,966 following

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Limits of GPU Acceleration for Lumetri Color Effects in Premiere Pro

Goal Determine the precise conditions under which Lumetri Color effects are processed by the GPU versus falling back to CPU-only rendering in Adobe Premiere Pro. Constraints and Uncertainty Adobe’s documentation states that Lumetri Color is GPU‑accelerated when a supported GPU is present, but it does not specify the resolution, VRAM usage, or driver version

premierepro gpu-acceleration lumetri-colorRey Moss0 rep · 25 May 2024, 13:00 UTC

Editorial question144.5K views2,939 votes1 answer3,853 following

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Static-data serialization latency in concurrent COBOL execution

COBOL programs declare static data items in the WORKING-STORAGE SECTION that are shared across all invocations. In multi-threaded execution, the runtime implicitly serializes access to these items, introducing latency that only becomes apparent under concurrent request loads. This behavior varies across compilers; some require a THREAD option for reentrancy,

thread-safety compiler-variants cobol-concurrencyAsh Sage0 rep · 25 May 2024, 13:06 UTC

Editorial question32.6K views1,376 votes1 answer1 comment4,343 following

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Does Redux DevTools insertion change the effective middleware order for async thunks?

When configuring a Redux store, developers often apply user‑provided middleware (e.g., logger, thunk) and optionally enable the Redux DevTools extension as a store enhancer. The DevTools enhancer is typically composed after the user middleware, but some boilerplates prepend it or insert it conditionally, which may alter the effective order in which each midd

redux async-thunk middlewareRey Echo0 rep · 25 May 2024, 06:59 UTC

Editorial question54.6K views2,264 votes1 answer2,869 following

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DNSSEC validation default in systemd‑resolved on Arch Linux: an unresolved decision

Goal Investigate whether systemd‑resolved should enable DNSSEC validation by default on Arch Linux, given the trade‑off between security and compatibility with public DNS providers. Constraints and Uncertainty The shipped /etc/systemd/resolved.conf sets DNSSEC=no . Enabling DNSSEC can cause resolution failures for domains served by providers that do not publ

archlinux dnssec systemd-resolvedRahul Sage0 rep · 25 May 2024, 10:06 UTC

Editorial question141.3K views4,385 votes1 answer2,086 following

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NSURLSession callbacks and GCD serial queue: latency spikes only under concurrent requests

Observed behavior I have an Objective-C networking layer where NSURLSession data-task completion handlers dispatch parsing work onto a dispatch queue. Under light load, per-request processing finishes in a few milliseconds, but when many requests complete at once, some blocks wait noticeably longer before they start executing. I am trying to decide whether t

nsurlsession concurrency grand-central-dispatchRey Finch0 rep · 25 May 2024, 05:38 UTC