Using DynamoDB Time to Live (TTL) to Automatically Expire Items
Enable TTL on a DynamoDB table, store expiration as a Unix‑epoch‑seconds Number, and understand the asynchronous deletion behavior and common pitfalls.
21 May 2026, 01:43 UTC
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The knowledge journal
Practical guides, fresh perspectives and ideas worth trying.
Optimizing RAM with Hyper-V Dynamic Memory: When to Use It and What to Watch
Learn how Hyper‑V Dynamic Memory reclaims unused RAM from idle VMs and gives it to busy workloads, with configuration steps, a worked example, and key limitations.
07 Aug 2025, 20:31 UTC
Using Custom Message Codecs in Vert.x Event Bus to Reduce JSON Overhead
Learn how to register a custom MessageCodec in Vert.x Event Bus to send domain objects without JSON overhead, with a full example and pitfalls to avoid.
12 Jan 2026, 20:32 UTC
Using Timeshift in Linux Mint for Safe Kernel and Driver Updates
Learn how to use Linux Mint’s pre‑installed Timeshift tool to snapshot your system before risky updates and roll back cleanly when something goes wrong.
12 Apr 2026, 23:21 UTC
Using Karate's callonce for Reusable Authentication Setup
Learn how to eliminate duplicate login steps in Karate API tests by centralizing authentication with the callonce keyword, then verify the result with the HTML report.
25 Jun 2026, 15:39 UTC
Using Knockout.js pureComputed to Reduce Unnecessary UI Updates
Learn how Knockout.js pureComputed avoids unnecessary subscriptions and evaluations, with a concrete example showing delayed evaluation of a list length.
08 Dec 2025, 16:45 UTC
Syncing Program Epics Between Jira Align and Jira Software: A Practical Guide
Learn how to configure and validate Jira Align’s bidirectional Jira connector to keep program epics in sync, avoid conflicts, and stay within API limits.
12 Jul 2025, 01:58 UTC
Configure Continuous Replication Between Two CouchDB Instances
Step‑by‑step guide to create a persistent replication job that keeps a source and target CouchDB database in sync, with verification and recovery tips.
01 Nov 2025, 07:06 UTC
Reduce Ionic App Startup Time with Lazy‑Loaded Pages
Learn how to lazy‑load Ionic pages with Angular feature modules to shrink the initial bundle and speed up first paint.
10 Nov 2025, 07:44 UTC
Choosing Gatling’s Open vs Closed Workload Models for Realistic Load Tests
Learn when to use Gatling’s open injection (constant arrival rate) versus closed injection (fixed concurrency), see a Scala DSL example, and understand the limits and pitfalls of each model.
31 Mar 2026, 04:13 UTC
Speeding Up Gulp Watch with Incremental Builds
Learn how to make Gulp watch rebuild only the changed files using gulp.lastRun() for faster feedback loops.
22 Jun 2026, 04:04 UTC
Diagnosing Android Application Not Responding (ANR) Errors: A Step‑by‑Step Guide
Learn how to recognize ANRs, read trace files, identify causes, apply fixes, and know when to escalate to deeper profiling.
25 Aug 2025, 10:20 UTC
Extending Maya with a Custom C++ Node via the Python API
Learn how to create a fast C++ custom node in Maya, expose it to Python, and validate its behavior in the dependency graph.
21 Feb 2026, 01:10 UTC
Architecture note for a custom procedural texture node in Blender using the Python API
Architecture note for a reusable procedural texture node in Blender: requirements, minimal design, trust boundaries, operational checks, failure modes, and redesign triggers.
25 Sept 2025, 21:21 UTC
Implementing DataTables Server‑Side Processing: Configuration, Gotchas, and Verification
Learn how to enable DataTables server‑side processing, map client parameters to a safe backend query, and verify the draw, total, and filtered counts are correct.
25 Jun 2026, 09:32 UTC
Configuring ESLint's no-console Rule: A Decision Guide for Dev vs. Production
Decide how to configure ESLint's no-console rule: compare off/warn/error severities and the allow list, then implement a dev-vs-production setup and verify it fails correctly.
19 Apr 2026, 09:22 UTC
Bitbucket Pipelines vs External CI: A Decision Guide for Modern Teams
Decide whether to use Bitbucket Pipelines or an external CI system like Jenkins by evaluating cost, feature set, security, and compliance. A concise comparison table, trade‑offs, and a minimal Maven pipeline example guide you through the choice.
01 Sept 2026, 18:16 UTC
Using Debian Backports to Get Newer Software on a Stable System
Learn how Debian Backports lets you install newer package versions on a stable release without sacrificing system reliability, with a step‑by‑step vim example and notes on trade‑offs.
20 Mar 2026, 22:00 UTC
Elasticsearch Search‑After: Fast Deep Pagination Without From/Size Overhead
Deep pagination with from/size in Elasticsearch hurts performance. Search‑After lets you page linearly by passing the last hit’s sort values as a cursor. Learn how to set it up, test it, and understand its limits.
18 Nov 2025, 01:25 UTC
Implementing Shared Mailboxes in Dovecot with IMAP ACLs
Learn how to set up Dovecot’s shared namespace and ACL plugin for per‑folder sharing, including configuration, trust boundaries, operational checks, and common failure modes.
05 Mar 2026, 22:49 UTC
Moving Data Between Databases with DBeaver's Data Transfer Wizard
DBeaver's Data Transfer wizard moves data between any two JDBC databases without scripts. Here's a worked SQLite-to-PostgreSQL example, the mapping pitfalls to watch, and how to verify the result.
01 Jul 2026, 10:33 UTC
Efficient List Endpoints in Lumen: Mastering Eloquent Pagination
Learn how to enable Eloquent pagination in Lumen, build JSON list endpoints that respect limits, and choose between paginate() and simplePaginate() for performance.
17 Aug 2025, 18:20 UTC
Reducing Server Load in Livewire with Computed Properties
Stop sending redundant data to the client. Learn how to use Livewire Computed Properties to cache server-side calculations and optimize your Laravel application's performance.
31 Mar 2026, 19:55 UTC
Implementing Dynamic Task Mapping in Apache Airflow
Learn how to use Airflow's .expand() to fan out one task definition over a runtime-resolved list, with setup steps, UI verification checks, and recovery options for failed mapped instances.
30 Sept 2025, 19:39 UTC
Why Fenced Code Blocks Matter: Syntax‑Highlighted Markdown for Technical Docs
Fenced code blocks with language tags give Markdown the power to render syntax‑highlighted code. This blog explains how they work, shows a concrete example, discusses trade‑offs, and gives a quick test plan to verify your renderer.
06 Feb 2026, 19:40 UTC
Mocha Hooks: Use Scoping to Keep Tests Isolated Without Paying for Setup Every Time
Mocha hooks control test setup and teardown. Match before/after to suite lifetime and beforeEach/afterEach to test isolation to avoid pollution and unnecessary cost.
30 Jan 2026, 22:16 UTC
Decoupling Blog Features with Laminas MVC EventManager
Learn how to use Laminas MVC's EventManager to add cross‑cutting concerns like logging and email notifications without coupling them to controller code.
12 Oct 2025, 02:48 UTC
Building a Modular Fastify Plugin with Encapsulated Decorators and Schema Validation
Step‑by‑step guide to create a Fastify plugin that adds a scoped decorator, validates JSON schemas, logs with Pino, and verifies encapsulation.
01 Jan 2026, 17:35 UTC
Enforcing OpenAPI Contracts in CI: Lint, Diff, and Block Breaking Changes
A practical guide to linting, diffing, and CI-enforcing your OpenAPI spec so breaking changes fail before merge.
30 Aug 2025, 10:01 UTC
Actor Component vs Child Actor Component in Unreal Engine
A guide to choosing between Actor Components and Child Actor Components in Unreal Engine, with a comparison table, trade-offs, and Blueprint validation steps.
13 Jun 2026, 15:50 UTC
Paging Grails Data the Right Way: GORM max/offset and the paginate Tag
GORM's list(max:offset:) plus the g:paginate tag gives you database-backed pagination with flat memory use — if you clamp max, understand the count query, and know where offset paging degrades.
25 Feb 2026, 15:32 UTC
Integrating Devicon Icons in React: Installation and Optimization
A technical guide to implementing Devicon in React projects, focusing on CSS integration, accessibility standards, and preventing style collisions.
19 Jul 2026, 20:18 UTC
Choosing a TYPO3 Route Enhancer: A Decision Guide for Readable, Localized URLs
TYPO3 v9+ moved routing into the core site config. This guide compares route enhancers and aspect mappers, shows a working Extbase configuration, and covers validation and RealURL migration.
27 Mar 2026, 05:08 UTC
Testing Time Without Waiting: Jest's Modern Fake Timers in Practice
Jest's modern fake timers let you test debounces, retries, and date-sensitive logic in microseconds instead of waiting real time — here's how to use them without hanging your suite.
02 Nov 2025, 21:26 UTC
Eliminate Test Duplication with RSpec Shared Examples: A Practical Guide
Master RSpec’s shared_examples to cut test duplication—define once, reuse everywhere, and verify with dry‑run and documentation output.
07 Jul 2025, 05:06 UTC
Caching at the Edge of Your App: A Practical Look at NGINX proxy_cache
NGINX can absorb most of your read traffic before it reaches the app tier. A practical guide to proxy_cache: a working configuration, stampede protection, verification, and the staleness trade-offs.
17 Feb 2026, 15:54 UTC
Astro Island Interactivity Troubleshooting: Why a Component Renders but Never Hops to the Client
Astro islands can render markup but stay static if the client directive is missing, the renderer isn’t registered, or a runtime error aborts hydration. This guide walks through the condition, common causes, ordered checks, fixes, and escalation steps to get your component interactive again.
17 Sept 2025, 08:00 UTC
Mastering Flask’s Application Factory: Scalable, Testable Project Structure
Learn why Flask’s application factory pattern outperforms the global app approach, see a step‑by‑step example, and understand its trade‑offs so you can build testable, modular Flask apps.
28 Oct 2025, 16:25 UTC
Diagnosing Slow Plotly Scatter Charts: When and How to Switch to scattergl for Large Datasets
When Plotly scatter charts lag or crash with >100k points, switch to scattergl, downsample, or set static dimensions. This guide walks through diagnosis, checks, fixes, and escalation steps.
21 Sept 2026, 13:49 UTC
Mastering Native Lazy Loading: When to Use loading="lazy" for <img> and <iframe>
Learn how to implement loading="lazy" on <img> and <iframe>, its impact on LCP, browser behavior, and how to keep CLS low. Get a concrete example and practical checklist.
29 Jul 2026, 04:26 UTC
Choosing Sass @use Over @import for Modular Stylesheets
Learn why and how to replace Sass @import with @use for better encapsulation, including constraints, a comparison table, implementation steps, and verification tips.
05 Jul 2025, 15:13 UTC
Stop Editing Icons One by One: Illustrator's Global Edit Does the Bulk Work
Illustrator's Global Edit lets you update every structurally identical object in a document by editing just one. Here's how the matching works, a recoloring walkthrough, and the pitfalls to check before relying on it.
11 Oct 2025, 15:56 UTC
Diagnosing CL_MEM_OBJECT_ALLOCATION_FAILURE and Memory Exhaustion in OpenCL
A diagnostic guide for resolving CL_MEM_OBJECT_ALLOCATION_FAILURE and local memory overflows in OpenCL, focusing on the gap between total VRAM and maximum allocatable buffer sizes.
13 Oct 2025, 17:23 UTC
Using Firestore Batched Writes for Atomic Multi‑Document Updates
Learn how Firestore batched writes let you group up to 500 create, update, or delete operations into a single atomic request, with a Node.js example, limits, and common pitfalls.
15 Oct 2025, 02:08 UTC
Using Git sparse-checkout to slim monorepo clones
Learn how Git's sparse-checkout lets you clone only the directories you need from a large monorepo, reducing bandwidth and speeding up workflows.
13 Mar 2026, 10:29 UTC
Responsive Layouts in Delphi FMX: Align, Anchors, and the Layout Controls That Do the Work for You
Stop hand-coding control positions in FMX. Align, anchors, margins, and container layouts like TGridPanelLayout give you resolution-independent forms across Windows, macOS, iOS, and Android — with no resize handlers.
12 Jul 2026, 10:59 UTC
Using HiveMQ Harvester to Capture and Replay MQTT Traffic for Testing
How HiveMQ Harvester captures and replays MQTT traffic for testing: a worked configuration, replay guidance, and the disk, performance, and timing limits to plan around.
12 Nov 2025, 19:52 UTC
Your WebAssembly Module Runs But Is Slow: A Diagnostic Guide
Your wasm module works but is slow. A diagnostic walkthrough: profile first, then check build flags, SIMD opcodes, cross-origin isolation headers, and JS boundary overhead — with fixes tied to each finding.
29 Mar 2026, 18:33 UTC
Your Flutter List Is Fine Until It Isn't: When to Switch to ListView.builder
Column in SingleChildScrollView builds every child up front; ListView.builder builds only what's visible. Here's how the lazy model works, a chat-feed example, and the state and nesting trade-offs to plan for.
18 Feb 2026, 04:26 UTC
SDL Window Opens but Stays Black: A Diagnostic Guide for SDL2 and SDL3
Your SDL window opens but stays black or frozen. A diagnostic guide covering missing RenderPresent, renderer fallbacks, and SDL2/SDL3 version mismatches.
15 Oct 2025, 05:28 UTC