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mostlylucid.ephemeral.complete; a strange concurrent systems pattern system in an LRU cache.
Well this has been my obsession for the past week. See the previous parts and what led to this; 'What if an LRU was an execution context.'. Now it's a set of 30 Nuget packages covering most major...

Sunday, 14 December 2025 13:35

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20 minute read

Building a Frontend Before the API is Ready: Without Brittle Fixtures
How many times have you been blocked waiting for backend APIs to be ready? Or spent hours maintaining brittle mock data that becomes stale the moment requirements change? Enter mostlylucid.mockllmapi...

Saturday, 13 December 2025 14:30

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14 minute read

Ephemeral Signals - Turning Atoms into a Sensing Network
A tiny primitive that turns concurrent work into a coordinated, adaptive system. "The Ephemeral Signals Pattern" In Part 1 we built ephemeral execution - bounded, private, self-cleaning async...

Friday, 12 December 2025 16:00

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22 minute read

Building a Reusable Ephemeral Execution Library
In Part 1: Fire and Don't Quite Forget, we explored the theory behind ephemeral execution - bounded, private, debuggable async workflows that remember just enough to be useful and then evaporate. This...

Friday, 12 December 2025 14:00

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13 minute read

Fire and Don't Quite Forget - Ephemeral Execution Without State
Most async systems either remember too much (logs, queues, persisted junk you never wanted)… or they remember nothing at all (fire-and-forget black holes that vanish the moment something goes...

Friday, 12 December 2025 12:00

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15 minute read

Learning LRUs - When Exceeding Capacity Makes Your System Better
Most systems degrade when overloaded. Memory fills up, queries slow down, users complain, servers crash. A few unusual ones get better. This article shows how an LRU-based behavioural memory becomes...

Tuesday, 09 December 2025 12:00

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19 minute read

Cooking with DiSE (Part 4): Building Systems That Learn, Adapt, and Evolve
Most software architectures assume the system is static. DiSE assumes the system is alive. Note: This is Part 4 in the "Cooking with DiSE" series. See Part 1, Part 2: Graduated Apprenticeships, and...

Monday, 08 December 2025 12:00

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15 minute read

mostlylucid.botdetection: Fighting Back Against Scrapers (Part 1)
Scrapers are about to start using AI to mimic real users - so I built a bot detector that learns, adapts, and fights back. Key concept: Behavioural Routing. This enables a new category - where...

Monday, 08 December 2025 07:00

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13 minute read

Thinking in Systems: A Retrospective on a Life Spent Trying to Understand How Things Fit Together
By someone who can't stop analysing patterns, even their own. As the category says, this is a far more personal essay than my usual work. I don't mind if you skip it...but if it resonates leave a...

Sunday, 07 December 2025 12:00

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10 minute read

Data Hierarchies Part 1.5: PostgreSQL ltree with EF Core
PostgreSQL's ltree extension gives you materialised paths with database-native superpowers: GiST indexes, specialised operators like @> and <@, and powerful pattern matching. If you're committed to...

Saturday, 06 December 2025 09:50

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15 minute read

Data Hierarchies Part 1.4: Nested Sets with EF Core
Nested sets encode the entire tree structure into just two integers per node - Left and Right boundaries from a depth-first walk. Finding all descendants becomes a simple range query, and ORDER BY...

Saturday, 06 December 2025 09:40

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16 minute read

Data Hierarchies Part 1.3: Materialised Path with EF Core
Materialised paths store the complete ancestry as a delimited string - like /1/3/7/ - making ancestors instantly readable without any joins. Perfect for breadcrumb generation and human-readable...

Saturday, 06 December 2025 09:30

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14 minute read

Data Hierarchies Part 1.2: Closure Table with EF Core
Closure tables precompute and store every ancestor-descendant relationship, trading storage space for blazing-fast reads. This is the approach this blog uses for its comment system - when reads vastly...

Saturday, 06 December 2025 09:20

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16 minute read

Data Hierarchies Part 1.1: Adjacency List with EF Core
The adjacency list is the simplest and most intuitive approach to storing hierarchical data - each row just points to its parent. It's what most developers reach for first, and for shallow trees with...

Saturday, 06 December 2025 09:10

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11 minute read

Data Hierarchies: Managing Hierarchical Data with EF Core and PostgreSQL (Overview)
Hierarchical data is everywhere in software development: threaded comments, organisational charts, file systems, product categories, and forum discussions. The eternal question of "how do I store a...

Saturday, 06 December 2025 09:00

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8 minute read

No we're likely not reaching AGI anytime soon: The Behaviourist Fallacy in AI Subsystem Development
Here's an uncomfortable truth that nobody in the AI hype machine wants to discuss: We still don't know what intelligence actually is. Not in humans. Not in animals. And certainly not in machines. This...

Friday, 05 December 2025 14:30

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21 minute read

Modern Release Strategies with GitHub Actions
The core principle: make releases fast and painless, and you'll release more often. This is critical for agile development - rapid, reliable deployments create the fast feedback loop you need. When...

Thursday, 04 December 2025 12:00

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6 minute read

Data Access in .NET: Comparing ORMs and Mapping Strategies (Part 2 - Dapper, Raw SQL, and Hybrid Approaches)
Welcome to Part 2 of our comprehensive guide to data access in .NET! In Part 1, we explored Entity Framework Core in depth, including SQL generation, common pitfalls, and that critical warning about...

Wednesday, 03 December 2025 15:00

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20 minute read

Data Access in .NET: Comparing ORMs and Mapping Strategies (Part 1 - Entity Framework Core)
When building .NET applications, one of the most important architectural decisions you'll make is how to handle data access and object mapping. The .NET ecosystem offers a rich variety of approaches,...

Wednesday, 03 December 2025 14:00

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21 minute read

Where's the semantic search Scott?
Ok quick piece here. You've read all about semantic search, in MANY articles here. But you may have noticed; THIS SITE AIN'T ACTUALLY USING IT YET. So where is it? Simple the way I deploy this site...

Wednesday, 03 December 2025 12:30

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Less than a minute

Page 3 of 39 (Total items: 778)
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