Tối ưu PHP-FPM, OPcache và Redis cho WordPress trên web hosting

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Các trang WooCommerce thường chậm ở bước giỏ hàng, đăng nhập và thanh toán vì nội dung cá nhân hóa không dùng được bộ nhớ đệm tĩnh. Bài viết đề xuất bật OPcache để lưu sẵn mã PHP đã biên dịch trong RAM, với cấu hình php.ini được khuyến nghị cho PHP 8.2/8.3. Việc dùng Redis Object Cache giúp giảm khoảng 70% lượt đọc cơ sở dữ liệu lặp lại, kèm các hằng số kết nối khai báo trong wp-config.php. Tác giả cũng khuyến nghị kiểm tra dung lượng dữ liệu tự nạp trong bảng wp_options, và nên sao lưu cơ sở dữ liệu trước khi dọn dẹp các khóa cũ. Theo bài viết, kết hợp các biện pháp này giúp thời gian phản hồi trong các đợt khuyến mãi dưới 400ms.

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Software Project Risk Register: Template and 15 Example Risks

A risk register lists potential problems along with their likelihood, severity, owner, planned response, and status. For software projects, the author recommends six core columns: risk, probability, impact, owner, response, and status. The guide distinguishes risks from blockers and open questions, which can all sit in one list if each item is typed. Risks should be phrased as conditional statements so they cannot be mistaken for tasks. A 1-to-5 scale for probability and impact, multiplied into a score, is suggested, with scores of 15 or more typically requiring action before work begins. The article includes an invented example project with 15 typical risks to adapt.

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ProgrammingDEV Community ·

Requirements Traceability Matrix: What It Is and How to Build One

A requirements traceability matrix is a table linking each requirement to its goals, design, tasks, and tests, showing whether promised features are built and verified. It helps teams evaluate proposed changes, spot coverage gaps when features are cut, identify untested requirements, and justify why a feature exists. The article distinguishes forward, backward, and bidirectional traceability, with bidirectional being the most common approach for teams. It recommends a single table with stable requirement IDs and only the columns teams will actually maintain, and includes an invented example for a customer order portal. The matrix is presented as an index across requirements documents rather than a replacement for them.

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ProgrammingDEV Community ·

Business Requirements Document Template and Example for Project Planning

A business requirements document records why a project exists and what the business needs before any decisions about how to build it. It is aimed at the people who fund and approve the work, and it serves as a reference for later questions about why a feature exists. The document answers four core questions: the business problem, the desired outcome, what is in and out of scope, and what must hold for success. It is distinct from a product requirements document and a software requirements specification, which cover product behaviour and technical detail respectively. The guide provides a copyable template covering sections such as objectives, scope, stakeholders, risks, and approval, and advises writing the executive summary last since some approvers only read that part.

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ProgrammingDEV Community ·

Decade-Long Drupal Maintenance Keeps AgeGuess Citizen Science Platform Running

AgeGuess.org presents itself as a simple guessing game in which players estimate how old people look in photographs. Behind it is an open scientific database of perceived age, a biomarker used to study human ageing, built from more than 220,000 guesses submitted by citizen scientists in over 120 countries since 2012. The article is written by an independent French developer who maintained the platform on Drupal from 2014 to 2024, after taking over web development from earlier contributors. It describes how the platform's architecture serves both the public game and the research dataset, which has been published in Nature's Scientific Data. The piece also reflects on what sustaining a citizen science project over a decade requires in practice.

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