Rust Iterators and Adapters
Master Rust's iterator trait, lazy adapters like map and filter, and consumers like collect and fold for fast, expressive data processing.
·3 min read · #rust#iterators#adapters
#performance
110 posts · page 3 of 3
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 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 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
Web Performance: Core Web Vitals Guide
A practical guide to Core Web Vitals: LCP, INP, and CLS. How they are measured, what hurts them, and concrete fixes that move the numbers.
·5 min read · #web#performance#core-web-vitals
Load Testing with k6
A practical introduction to k6 for load testing HTTP services. Covers scripting, stages, thresholds, and how to read the results without fooling yourself.
·4 min read · #testing#load-testing#k6
Caching Strategies in System Design: A Practical Guide
Compare cache-aside, read-through, write-through, write-behind, and refresh-ahead. Learn when each strategy fits, what consistency you give up, and how to choose for interviews.
·6 min read · #system-design#caching#performance
React Suspense and Lazy Loading Components
Use React.lazy and Suspense to code-split a React app, design fallback UI, place boundaries thoughtfully, and understand how Suspense extends to data fetching.
·6 min read · #react#performance#intermediate
useMemo and useCallback in React: When You Actually Need Them
A practical guide to React's useMemo and useCallback hooks, covering referential equality, when memoization helps performance, when it backfires, and how to profile first.
·6 min read · #react#performance#intermediate
Postgres EXPLAIN and Practical Query Tuning
Learn how to read Postgres EXPLAIN and EXPLAIN ANALYZE output, spot expensive operations, and apply practical indexing and rewrite techniques to speed up queries.
·6 min read · #postgres#performance#intermediate
Web Vitals Explained: LCP, INP, CLS in Plain English
What Largest Contentful Paint, Interaction to Next Paint, and Cumulative Layout Shift measure, how to read them, and the practical fixes that move each one.
·5 min read · #performance#web-vitals#intermediate
SQL Indexes and Query Performance Basics
How B-tree indexes work, when CREATE INDEX helps, when it hurts, what EXPLAIN tells you, and the concept of selectivity that decides whether an index is worth its cost.
·10 min read · #sql#intermediate#performance