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Coexistence of legacy code in high-load systems

https://sudonull.com/coexistence-of-legacy-code-in-high-load-systems

Learn why removing legacy code is risky and how to apply feature toggles for safe coexistence in Spring Boot. Strategies for middle/senior dev without refactoring risks. Practical examples.

Fastify Optimization: Bloom Filters and Scalable Backends

https://sudonull.com/fastify-optimization-bloom-filters-and-scalable-backends

Explore practical solutions for creating a high-load backend on Fastify: custom IDs, Bloom filters for users and images, loginless authorization, asynchronous DB writes, API protection, and TypeScript typing.

QR Ticket Validation Design for Cinemas

https://sudonull.com/qr-ticket-validation-design-for-cinemas

Breakdown of System Design for QR Ticket Validation: offline signature, idempotency, atomic updates. Solving timeouts and HoL blocking for high-load. Practical SQL examples.

Kafka Safety Window: retention monitoring

https://sudonull.com/kafka-safety-window-retention-monitoring

Learn how to prevent data loss in Kafka due to retention.bytes. Implement Data Safety Window in Grafana with PromQL. Tuning case for high-load topics — instructions for Platform Engineers.

Picows: the fastest WebSocket for asyncio without compromises

https://sudonull.com/picows-the-fastest-websocket-for-asyncio-without-compromises

Analysis of picows architecture — WebSocket library with zero-copy processing and minimal latency. For algorithmic trading and high-load systems. Learn how it works.

From other projects

Best High Yield Savings Accounts 2025: Top 10 Rates

https://ymaho.com/best-high-yield-savings-accounts-2025-top-10-rates

Compare the best high yield savings accounts for 2025. Up to 4.51% APY, no fees. Expert picks for every saver. Compare rates & bonuses now.

Dollar at high: should we expect a Fed rate hike?

https://ymaho.com/dollar-at-high-should-we-expect-a-fed-rate-hike

DXY index at 2-month high. Market prices in 40% probability of rate hike. Find out what will happen to the dollar, euro, and gold. Forecast for 30 and 90 days.

Spurs' De Zerbi Gamble: High Stakes for Premier League Survival

https://lrivo.com/spurs-de-zerbi-gamble-high-stakes-for-premier-league-survival

Tottenham Hotspur takes a major risk appointing Roberto De Zerbi amidst a relegation battle. Learn about the tactical challenges and financial implications of this high-stakes decision.

Bitcoin may update its high: analyst forecast

https://ymaho.com/bitcoin-may-update-its-high-analyst-forecast

Analyst Michaël van de Poppe predicts Bitcoin will update its all-time high by the end of 2026. Find out what his optimism is based on and what risks to consider.

Nikkei 225 updated historical high 68,000: analysis and forecast

https://ymaho.com/nikkei-225-updated-historical-high-68-000-analysis-and-forecast

Japan's Nikkei 225 reached 68,000 points amid AI boom. Find out who benefited from the rally, why growth is unstable, and what to expect from the Bank of Japan. Read detailed analysis.

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