Why Finishing One Task Beats Starting Ten, According to a Dev Writer

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Developer and writer Serguey Asael Shinder argues that starting multiple tasks simultaneously does not constitute real progress. He notes that unfinished work creates a false sense of busyness without delivering actual results. His core advice is to complete one small thing fully before moving on to the next. Shinder suggests that true productivity is quiet and unassuming, likened to a clean, empty background. The piece is a brief reflective reminder for developers to prioritize closing existing loops over opening new ones.

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How developers can build practical color palettes without deep design expertise

A developer guide on DEV Community outlines a practical approach to choosing colors for web projects without relying on complex color theory. The author recommends using only two or three color scales derived from a single hue value, borrowing the eleven-shade system popularized by Tailwind CSS. Industry context guides hue selection — blues for finance, greens for health, purples and oranges for creative work — though these are treated as starting points rather than strict rules. Using the OKLCH color model, developers can define a single hue variable and programmatically generate an entire harmonious shade scale. The guide also suggests aliasing neutral tones to a consistent name like --gray so palette updates require changing values in one place rather than across every template.

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ProgrammingDEV Community ·

Python's GIL Explained: When Threads Help and When They Don't

CPython's Global Interpreter Lock (GIL) is a mutex that permits only one thread to execute Python bytecode at a time, a design choice rooted in the language's reference-counting memory model. Because blocking operations like network calls and file I/O release the GIL, threads remain effective for I/O-bound tasks but offer no speed gain for CPU-bound pure Python work. For CPU-intensive workloads, developers should turn to multiprocessing, NumPy, or Numba, which either bypass or release the GIL during heavy computation. PEP 703 introduced an experimental free-threaded CPython build (available in 3.13t and 3.14t), though the standard python.org release still ships with the GIL enabled. Widespread adoption of the free-threaded build depends on third-party packages releasing compatible wheels.

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ProgrammingDEV Community ·

Developer Builds AI-Powered Japan Stock Pipeline That Disproved Three Strategies

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ProgrammingDEV Community ·

How to Use PostgreSQL LISTEN/NOTIFY for Live Updates Without Extra Infrastructure

PostgreSQL includes a built-in pub/sub mechanism called LISTEN/NOTIFY that allows apps to push live updates to connected clients without needing Redis or a separate message broker. One session triggers pg_notify on a channel, and any session actively listening on a persistent connection receives the payload once the transaction commits. Key limitations include an 8,000-byte payload cap, 63-character channel name limit, and no message persistence or delivery guarantee, making it suitable as a change signal rather than a reliable queue. Because pooled connections get recycled, a dedicated long-lived connection that bypasses transaction-mode poolers like PgBouncer is required for LISTEN to work reliably. A single shared LISTEN connection can multiplex multiple logical channels and feed per-client Server-Sent Events streams, with careful reconnect logic needed to avoid race conditions.

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