Rust Tokio Runtime Explained
How Tokio schedules tasks, manages workers, and integrates with the OS to power asynchronous Rust programs efficiently across cores.
·4 min read · #rust#tokio#async
Blog
1745 posts · page 27 of 37
Rust Traits vs Interfaces
Rust traits look like interfaces from other languages, but the differences matter: associated types, blanket impls, coherence, and dynamic dispatch all behave their own way.
·5 min read · #rust#traits#polymorphism
ACID vs BASE: Transaction Models Explained
What ACID and BASE actually mean, where each shines, and how to reason about consistency, availability, and durability when you design data systems.
·4 min read · #sql#acid#base
SQL Aggregate Functions and GROUP BY in Depth
How aggregate functions interact with GROUP BY, HAVING, and window functions, with practical patterns and pitfalls every backend engineer should know.
·4 min read · #sql#group-by#aggregates
CTE vs Subquery vs Temp Table: Picking the Right SQL Tool
Compare common table expressions, subqueries, and temporary tables in SQL. Learn when each shines, the performance trade-offs, and concrete examples.
·5 min read · #sql#cte#subquery
SQL EXPLAIN ANALYZE Deep Dive
How to read EXPLAIN ANALYZE output, interpret cost estimates, spot bad plans, and use it to drive real performance improvements in production databases.
·4 min read · #sql#explain#performance
SQL EXPLAIN and Query Planning Made Approachable
Learn how to read EXPLAIN output, what scan and join types mean, and how to spot the indexes and rewrites that make slow queries fast.
·5 min read · #sql#explain#performance
SQL Foreign Key Cascades Explained
How ON DELETE and ON UPDATE cascade options work, when to use CASCADE, SET NULL, RESTRICT, or NO ACTION, and how to avoid surprise mass deletes.
·5 min read · #sql#foreign-keys#cascade
SQL Indexes: B-Tree vs Hash vs GIN
A practical comparison of B-Tree, Hash, and GIN indexes in PostgreSQL, when each one shines, and how to pick the right structure for your query patterns.
·4 min read · #sql#postgres#indexes
SQL Joins Deep Dive: Inner, Outer, Cross, and Self
A thorough tour of SQL joins with diagrams, sample queries, and the gotchas that bite real systems: NULLs, duplicates, and join order.
·4 min read · #sql#joins#postgres
SQL NULL Handling Best Practices
Learn how NULL behaves in SQL, why three-valued logic trips up queries, and the patterns that keep your data consistent and your queries correct.
·4 min read · #sql#null#databases
SQL PIVOT and UNPIVOT Tutorial
How to reshape rows into columns and back using PIVOT, UNPIVOT, CASE aggregations, and lateral unions across Postgres, MySQL, and SQL Server.
·4 min read · #sql#pivot#unpivot
Postgres vs MySQL: A Practical Comparison
A grounded comparison of Postgres and MySQL across data types, transactions, replication, JSON, and ecosystem - so you can pick the right one for your project.
·4 min read · #sql#postgres#mysql
SQL Prepared Statements: A Practical Tutorial
What prepared statements actually do, why they prevent SQL injection, how they affect performance, and how to use them correctly from any language.
·4 min read · #sql#prepared-statements#security
SQL Recursive CTEs: A Practical Tutorial
Learn how recursive CTEs work in SQL, how to traverse hierarchies and graphs in pure SQL, and how to avoid the common termination and performance pitfalls.
·4 min read · #sql#postgres#cte
SQL Row-Level Security: A Practical Tutorial
Learn how PostgreSQL row-level security works, how to write effective policies, and how to enforce per-tenant isolation safely in multi-tenant applications.
·4 min read · #sql#postgres#security
SQL Stored Procedures vs Functions: Choosing Wisely
When to use stored procedures, when to use functions, and how transaction control, return values, and side effects differ across major databases.
·4 min read · #sql#stored-procedures#functions
SQL Transactions and Isolation Levels Explained
Understand BEGIN, COMMIT, ROLLBACK, and the four standard isolation levels with concrete examples of dirty reads, non-repeatable reads, and phantoms.
·5 min read · #sql#transactions#isolation
SQL Window Functions: A Practical Tutorial
Learn how window functions work in SQL, when to use ROW_NUMBER, RANK, LAG, and SUM OVER, and how they differ from GROUP BY.
·5 min read · #sql#window-functions#analytics
Tailwind Animation and Transition Utilities
Animate hover states, page mounts, and component transitions with Tailwind's transition and animation utilities and a few custom keyframes.
·4 min read · #tailwind#css#animation
Tailwind Arbitrary Values and the JIT Engine
How Tailwind's JIT engine generates classes on demand, when arbitrary values are the right tool, and how to keep your design system tidy.
·4 min read · #tailwind#css#jit
Tailwind Component Extraction Strategies
When to keep utilities inline, when to extract a component, and how to use @apply, variants, and cva without painting yourself into a corner.
·4 min read · #tailwind#components#patterns
Tailwind Custom Plugins Tutorial
Write your own Tailwind plugins to add utilities, components, and variants that match your design system without reaching for arbitrary values everywhere.
·4 min read · #tailwind#plugins#css
Customizing Tailwind: Theme and Design Tokens
Extend Tailwind's theme with custom colors, spacing, and design tokens that scale across a real product without fighting the framework.
·3 min read · #tailwind#css#design-tokens
Tailwind Dark Mode Strategies: Class, Media, and CSS Variables
Compare the class-based, media-based, and variable-driven approaches to dark mode in Tailwind, with code and the trade-offs of each.
·5 min read · #tailwind#dark-mode#theming
Tailwind Design System Patterns That Scale
Build a design system on top of Tailwind that stays consistent as the app grows. Tokens, components, variants, and the cva pattern explained.
·5 min read · #tailwind#design-system#components
Tailwind Prose and Content Styling
Use the @tailwindcss/typography plugin to style long-form content like blog posts and documentation with a single prose class and well-chosen overrides.
·4 min read · #tailwind#typography#prose
Tailwind Typography Plugin Tutorial
Style long-form Markdown and CMS content with the prose utility, then customize the typography plugin to fit your brand.
·4 min read · #tailwind#typography#prose
Tailwind vs Bootstrap: A Practical Comparison
A pragmatic comparison of Tailwind CSS and Bootstrap covering philosophy, bundle size, customization, and the right use cases for each framework.
·4 min read · #tailwind#bootstrap#css
Tailwind vs CSS Modules Comparison
Compare Tailwind utilities and CSS Modules across scoping, performance, refactoring, and team workflow to pick the right styling system.
·4 min read · #tailwind#css modules#comparison
Tailwind with Headless UI Tutorial
Use Headless UI's accessible React components alongside Tailwind utilities to build menus, dialogs, comboboxes, and toggles that match your design system exactly.
·4 min read · #tailwind#headless-ui#react
Tailwind with Radix UI Tutorial
Combine Radix UI's accessible unstyled primitives with Tailwind utilities to build production-grade dialogs, menus, and tooltips that look exactly the way you want.
·4 min read · #tailwind#radix#ui
Tailwind with shadcn/ui: An Overview
A practical overview of how Tailwind CSS and shadcn/ui work together to give you a component library you can actually own and customize.
·5 min read · #tailwind#shadcn#components
CAP Theorem in Practice: What It Actually Means for Your System
A pragmatic look at the CAP theorem: what consistency and availability mean for real workloads, and how PACELC describes the trade-offs better.
·5 min read · #system-design#cap-theorem#distributed-systems
Consistent Hashing Explained for Engineers Who Operate Real Systems
How consistent hashing actually works in production: virtual nodes, rebalancing, hot keys, and why naive modulo hashing fails at scale.
·5 min read · #system-design#consistent-hashing#distributed-systems
Designing Rate Limiters: A System Design Deep Dive
A senior-engineer guide to designing rate limiters: algorithms, distributed coordination, trade-offs, and production patterns that actually scale.
·5 min read · #system-design#rate-limiting#scalability
Distributed Locks with Redis: What Works, What Breaks
A practical look at distributed locking with Redis: SET NX EX, Redlock, fencing tokens, and the failure modes that cause data corruption.
·5 min read · #system-design#redis#distributed-systems
Event-Driven Architecture: The Pragmatic Introduction
What event-driven architecture really gives you, when to choose it, and the operational realities of running asynchronous systems at scale.
·5 min read · #system-design#event-driven#architecture
Message Queues: Kafka vs RabbitMQ (When to Pick Which)
A senior-engineer comparison of Kafka and RabbitMQ: log vs queue semantics, throughput, ordering, retention, and the real selection criteria.
·5 min read · #system-design#kafka#rabbitmq
System Design: Building a Scalable Chat Application
Design a real-time chat system that supports millions of users with low latency messaging, presence, and message persistence at scale.
·3 min read · #system-design#chat#websockets
System Design: Distributed Cache from Scratch
Design a distributed cache using consistent hashing, replication, and eviction policies to speed up reads at internet scale.
·3 min read · #system-design#cache#redis
System Design: A File Storage Service Like Dropbox
Design a file storage service with uploads, sync, deduplication, and sharing, scaling to petabytes while keeping reads fast and cheap.
·3 min read · #system-design#storage#s3
System Design: Real-Time Leaderboard with Redis
Design a real-time leaderboard using Redis sorted sets, handling millions of score updates per second with low latency rankings.
·3 min read · #system-design#redis#leaderboard
System Design: A Multi-Channel Notification Service
Design a notification service that delivers email, SMS, and push reliably with templating, rate limits, retries, and user preferences.
·3 min read · #system-design#notifications#messaging
System Design: A Payment Gateway
Design a payment gateway with idempotency, double-entry ledgers, retries, and PCI considerations, balancing safety and throughput.
·3 min read · #system-design#payments#idempotency
Next.js App Router vs Pages Router
Compare the Next.js App Router and Pages Router: routing, data fetching, layouts, server components, and how to decide for new and existing projects.
·5 min read · #nextjs#react#app-router
Content Security Policy Explained
A practical tour of CSP: what each directive does, how nonces and hashes work, how to roll out a policy safely with report-only mode, and the mistakes that quietly weaken it.
·4 min read · #web#security#csp
Cookies vs localStorage vs sessionStorage
Compare the three main browser storage mechanisms by lifecycle, capacity, security, and use case so you pick the right tool for tokens, preferences, and state.
·4 min read · #web#storage#cookies