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Editorial question130.3K views3,476 votes1 answer4,221 following

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MySQL 8.0 query cache removal and external invalidation strategies

The transition from MySQL 5.7 to 8.0 involves the complete removal of the Query Cache feature. While this eliminates the global lock bottleneck associated with table-level invalidation, it leaves applications without a built-in mechanism for caching frequently executed, static result sets. In previous versions, the query cache automatically handled entry inv

query-cache performance database-optimizationZo Echo0 rep · 25 Sept 2025, 00:44 UTC

Editorial question26.9K views3,568 votes1 answer708 following

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Can Ballerina's HTTP client enforce an idle connection timeout independent of the JDK?

Goal Diagnose intermittent exhaustion of Ballerina’s HTTP client connection pool when bursts of requests exceed the configured maxOpenConnections . Constraints The pool is backed by the JDK HttpClient, which varies between JDK 11 and JDK 17. No built‑in idle‑connection cleanup is exposed, and Prometheus metrics must be enabled to observe pool state. Unresolv

idle-connections

ballerina http-clientLax Atlas0 rep · 24 Sept 2025, 21:30 UTC

Editorial question134.8K views3,151 votes1 answer1 comment4,819 following

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Bazel Remote Cache Serves Stale Artifacts After External Repository Update

Problem Overview Bazel’s remote cache uses content‑addressable storage keyed by the checksum of downloaded artifacts. When the definition of an external repository (e.g., a git_repository or http_archive ) is updated to point at a new commit or URL, Bazel may still reuse a cached artifact if the checksum matches an older version. This can lead to a build tha

bazel stale-artifacts external-repositoryIra River0 rep · 24 Sept 2025, 15:07 UTC

Technical question104.4K views2,024 votes1 answer1 comment3,775 following✓ Accepted answer

How to open console app in Windows 11 without using new terminal feature?

I use this console app (Far manager since early Windows versions - it is best commander ever, the linux Midnight Commander is a pale rip off compared, it grew from Norton Commander and became 100x more powerful with time). Recently Windows 11 got new update and now there is something called "Terminal". Now Far is completely broken. It is now opens not as con

terminal console windows-11Boppity Bop20 Sept 2025, 13:26 UTC

Editorial question102.7K views4,463 votes1 answer1,397 following

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gRPC max concurrent streams per connection: tuning stream limits versus opening additional connections

I am configuring a gRPC client and server pair that will handle bursts of concurrent unary calls, and I need to settle one configuration decision: how many concurrent HTTP/2 streams to allow per connection versus when to open additional connections. My understanding is that gRPC multiplexes streams over a single HTTP/2 connection, and that the maximum concur

concurrency

grpc performance-tuningDev Atlas0 rep · 24 Sept 2025, 02:24 UTC

Editorial question119.7K views1,893 votes1 answer1,674 following

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Do browsers treat negative width on SVG <rect> as zero or as an error for geometry APIs?

When an SVG element receives a negative width or height value, the SVG 2 specification marks the value as an error and states the shape should not render. In practice, implementations differ on whether the element remains in the DOM with a zero-size geometry box or is treated as an erroring element that geometry and hit-testing APIs ignore. The distinction m

browser-compatibility geometry svgRey Finch0 rep · 24 Sept 2025, 00:39 UTC

Editorial question27K views2,497 votes1 answer4,113 following

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Logstash Persistent Queue disk exhaustion and automatic purging triggers

Logstash Persistent Queues (PQ) utilize disk-based buffering via memory-mapped files to ensure data durability across pipeline restarts. This mechanism allows the system to buffer events on disk to prevent data loss during crashes or unexpected shutdowns. When the queue.max_size limit is reached, Logstash typically manages flow via backpressure. However, the

logstash disk-management data-durabilityZo Echo0 rep · 23 Sept 2025, 23:14 UTC

Editorial question49.2K views960 votes1 answer919 following

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Lock Escalation Thresholds and Concurrency Latency

Lock Escalation Behavior Microsoft SQL Server utilizes lock escalation to manage memory overhead by converting numerous fine-grained locks (row, key, or page) into a single table-level lock. While this reduces the resource cost of lock management, it can introduce significant latency in multi-session environments by transforming short-duration row waits into

microsoftsqlserver concurrency microsoft-sql-serverAsh Nova0 rep · 23 Sept 2025, 10:11 UTC

Editorial question102.6K views3,174 votes0 answers4,354 following

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nixos-rebuild switch aborts with generic attribute‑missing error on missing module import

NixOS Module System When running nixos-rebuild switch with a missing or mis‑named entry in the imports list of /etc/nixos/configuration.nix , the NixOS module system aborts the build and reports a generic attribute‑missing exception. The evaluator does not automatically indicate which file path caused the lookup failure, leaving users to trace the problem ma

module-system

nixos configuration-nixCig Indigo0 rep · 23 Sept 2025, 17:10 UTC