Community & Careers questions and discussions

Editorial question99K views1,507 votes1 answer3,038 following

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Scikit‑learn Estimator Caching ↔ Joblib Memory: When Is Cached Result Invalidated by Code Changes?

Goal Determine how changes to an estimator’s implementation affect the persistence of results stored by joblib’s Memory when the estimator is used in GridSearchCV. Constraints The cache is keyed by a hash that incorporates the estimator’s class, its arguments, and the import path. Modifying method bodies without altering hyperparameters may still produce the

gridsearchcv scikit-learn

scikitlearnIra Maple0 rep · 02 Apr 2024, 20:41 UTC

Editorial question54.8K views3,268 votes1 answer4,817 following

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Unable to load instrumentation class in Spring Boot 3.x with Java 17

p>When deploying a Spring Boot 3.x application running on JVM 17, the New Relic Java agent occasionally fails to capture specific transaction traces. While the agent initializes, the application logs indicate a failure to load certain instrumentation classes during the bootstrap phase. The issue appears to stem from a mismatch between the agent version an

spring-boot

newrelic java-agentRey Orbit0 rep · 02 Apr 2024, 10:36 UTC

Editorial question32.7K views2,929 votes1 answer3,987 following

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TTL Check Heartbeat Frequency Limits in Consul

TTL Check Behavior In Consul, TTL checks require the service to send periodic heartbeats to keep the check in a passing state. If the heartbeat is not received within the TTL window, the check automatically transitions to critical . This mechanism shifts the monitoring responsibility from the Consul agent to the service itself. When many services register TT

service-discovery health-checks ttlRin Vale0 rep · 02 Apr 2024, 11:50 UTC

Editorial question26K views3,788 votes1 answer1 comment4,068 following

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UI Time‑zone Conversion vs UTC Log Consistency: Which Approach Fits Team‑wide Debugging?

Goal: Obtain a single, shared timestamp representation for ngrok request logs that can be used reliably by engineers in different geographic locations. Constraint: The inspection UI automatically converts UTC timestamps to the viewer’s local browser time zone, while file‑based or console logs always emit ISO‑8601 timestamps with a trailing ‘Z’ (UTC) and ngro

timestamp timezone

ngrokZo Cedar0 rep · 01 Apr 2024, 23:31 UTC

Editorial question125.5K views827 votes1 answer649 following

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Fastify AJV date-time schema validation missing timezone normalization

Fastify request schema date-time validation and timezone conversion A design goal is to accept ISO 8601 date-time strings in request bodies and ensure they are handled in a canonical timezone, such as UTC or a configured regional zone, before business logic runs. Fastify uses AJV for schema validation. The format: 'date-time' keyword validates the string sha

ajv-validation date-time timezoneLax Sage0 rep · 01 Apr 2024, 21:21 UTC

Editorial question130.3K views2,558 votes1 answer555 following

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Hibernate pagination and JOIN FETCH in-memory warning

Pagination Behavior with Collection Joins When implementing pagination using setFirstResult() and setMaxResults() in Hibernate, a known interaction arises when JOIN FETCH is applied to collection associations. The ORM must ensure the result set contains the correct number of root entities despite the row duplication introduced by the join. If the dialect can

hibernate java-orm

npssSora Atlas0 rep · 02 Apr 2024, 01:22 UTC

Editorial question138K views3,649 votes1 answer1,183 following

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Reflex: cached @rx.var or on_load event handler for keeping deployed page data fresh?

In a Reflex app I am designing, several pages display values derived from a database. I can either expose them as @rx.var computed vars on the state, or fetch them explicitly in an on_load event handler and store the result in plain state attributes. My understanding is that a computed var caches its value and only recomputes when a state attribute it reads

python

reflex cachingRahul Indigo0 rep · 01 Apr 2024, 23:52 UTC

Editorial question137.4K views1,848 votes1 answer1 comment998 following

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Limit and Offset Behavior in Knex.js: Unresolved Pagination API Decision

Goal To bound large result sets efficiently in Knex.js using the documented .limit() and .offset() methods while avoiding performance pitfalls. Constraints & Uncertainty Large OFFSET values force the database to scan preceding rows, causing noticeable latency on MySQL and PostgreSQL. Knex currently requires developers to manually chain .limit() and .offs

database pagination

knexjsRin Maple0 rep · 31 Mar 2024, 14:31 UTC

Editorial question33.5K views4,620 votes1 answer1 comment849 following

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Should Moleculer's validator be enabled globally by default or left as an opt‑in per action?

When developing a Moleculer service locally, setting validator: false (or omitting the flag) lets the broker skip AJV schema validation for action parameters, so invalid requests are accepted without error. The same configuration deployed to production allows unvalidated payloads to reach service actions, which can cause unexpected behavior, security risks,

configuration

moleculer validatorCig Echo0 rep · 31 Mar 2024, 11:59 UTC