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Medium

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7 Expert Tips to Make Your Java Lambdas Soar

  • Java lambdas introduced in Java 8 simplify functional programming, but can lead to performance pitfalls and unreadable code if not handled properly.
  • Method references can replace verbose lambda expressions, improving readability.
  • Minimize capturing variables in lambdas to avoid memory overhead.
  • Carefully use parallel streams with lambdas to boost performance for CPU-bound tasks.
  • Short, focused lambdas enhance readability and reduce debugging complexity.
  • Lambdas don't handle checked exceptions directly; wrap them in try-catch blocks.
  • Define custom functional interfaces for reusable lambda patterns.
  • Keep lambdas pure by avoiding side effects for predictability.
  • These tips aim to make writing clean, efficient code with Java lambdas.
  • Implementing these tips can enhance microservices readability and robustness.
  • Share your experience with applying these lambda tips in the comments.

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Self-Learning-Java

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Stop False Alerts: How the for Clause Works in Prometheus

  • Prometheus allows for the creation of alerts that don't trigger immediately to prevent false alarms from temporary issues.
  • The for clause in Prometheus alerting rules enables alerts to fire only if a condition persists for a specific duration.
  • An example alert rule using the for clause is provided with a demonstration involving the node_exporter service.
  • The example rule sets a 2-minute wait time before firing the 'NodeExporterDown' alert if the node_exporter service remains down.
  • Prometheus needs to continuously detect the specified condition for the set duration before sending a notification.
  • The process for configuring and implementing alert rules in Prometheus, as well as monitoring their states, is detailed in the example.
  • Users can observe alerts transitioning from inactive to pending, and eventually to firing states based on the specified conditions and time.

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Dev

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AI-Driven ESG and Compliance: How ServiceNow Can Anchor Sustainable Enterprise Governance

  • ESG (Environmental, Social, and Governance) is crucial for companies, moving from a buzzword to a necessity with tightening regulations and increasing investor and consumer expectations.
  • AI-driven automation, along with platforms like ServiceNow, can help modernize ESG workflows and enhance governance structures.
  • Key business benefits of ESG adoption include meeting regulatory requirements, meeting stakeholder expectations, reducing risks associated with manual reporting, and creating operational value.
  • AI makes ESG reporting scalable by automating data ingestion, providing real-time dashboards, extracting stories from data, and detecting anomalies early.
  • ServiceNow offers ESG and GRC modules for centralized data collection, compliance tracking, risk assessments, incident tracking, and AI governance on a single platform.
  • Real impact in enterprise sustainability is seen through environmental monitoring, supply chain compliance, diversity, equity & inclusion initiatives, and compliance reporting automation.
  • The architectural approach involves data integration, AI fabric, ServiceNow platform utilization, workflow automation, and analytics for reporting progress.
  • Business outcomes include reduced manual reporting effort, faster audit cycles, improved risk responsiveness, and enhanced stakeholder trust and brand value.
  • MJB Technologies offers ESG enablement services such as strategy workshops, technical integration, GenAI narrative automation, governance workflow setup, and KPI tracking.
  • AI-driven ESG with ServiceNow integration offers a future-proofed, transparent, and impactful governance approach for enterprises.
  • ESG empowered by AI and ServiceNow streamlines processes, reduces risks, and enhances stakeholder trust, paving the way for smart and automated governance.

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Self-Learning-Java

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Materialized Views in BigQuery

  • Materialized views in BigQuery store precomputed query results on disk to improve query performance and reduce costs.
  • Compared to standard views, materialized views do not need to execute the query each time, making them faster and more cost-effective.
  • Benefits include improved performance, cost savings, and ideal usage for scenarios where data does not change frequently.
  • Key points to remember: Materialized view and base table must be in the same dataset, can only use one base table without joins, and are mainly used for aggregation or filtering.
  • Limitations include inability to use materialized views in copy, import, or export jobs and breakage if the base table is deleted.
  • Steps for creating materialized views include defining the base table, inserting sample data, and creating materialized views for different aggregations.
  • Examples of materialized views created include total sales per salesperson, daily sales total, total sales by region, and top salesperson daily summary.
  • Materialized views are useful for speeding up repeated queries with aggregations and filtering in BigQuery but require monitoring freshness and caution with base table deletions.
  • Query rerouting can automatically utilize existing materialized views for better query efficiency in BigQuery.

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Setup SSL/TLS for PostgreSQL with Docker

  • Setting up transport layer security (TLS) for PostgreSQL in production is crucial to prevent man-in-the-middle attacks.
  • The guide focuses on connecting securely to the PostgreSQL database with a local certificate authority and enforcing encrypted connections with strict settings.
  • Prerequisites include having Docker installed and running on the machine.
  • Steps involve generating a certificate authority (CA), creating server and client certificate files, setting up TLS in PostgreSQL with an initialization script, building a Docker image with TLS enabled, and testing the connection.
  • Deploying PostgreSQL with TLS on Sliplane involves creating a GitHub repository, logging in to Sliplane, deploying a server, choosing repository as deploy source, creating certificates, and adding environment variables for successful deployment.
  • The tutorial concludes with accessing the PostgreSQL instance via a secure connection using psql client.
  • Environmental variables required include POSTGRES_PASSWORD, SERVER_CERT, SERVER_KEY, and ROOT_CA_CRT.
  • The tutorial provides detailed steps and scripts to enable SSL/TLS for PostgreSQL within a Docker environment.
  • Ensure all generated certificate files are treated as secrets and not added to version control or Docker images.
  • Overall, the tutorial offers a comprehensive guide for implementing SSL/TLS for PostgreSQL with Docker and ensuring secure database connections.

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Understanding Limitations of BigQuery Views

  • BigQuery views are powerful tools for abstracting complex queries but have specific limitations developers must be aware of.
  • Views and base tables must be in the same region to avoid errors.
  • Data from views cannot be exported directly, materializing results into a table is necessary.
  • Standard SQL queries cannot reference Legacy SQL views; recreate them using Standard SQL.
  • Query parameters cannot be used in views; apply them outside the view.
  • Views cannot be used in wildcard table queries, as they don't conform to BigQuery's wildcard patterns.
  • Maximum nesting of views is limited to 16 levels; beyond that, a 'Resources exceeded' error occurs.
  • Each dataset can have a maximum of 2,500 views; consider reorganizing or consolidating views if needed.
  • Views are recomputed at query time, impacting performance for complex logic or large tables.
  • Consider using Materialized Views for frequent access to complex joins or aggregations to improve performance.
  • Design data models with awareness of view limitations to ensure scalability and performance in BigQuery.

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Choosing the Right CMS: How We Help Our Clients Decide

  • When a potential client arrives with a strong CMS preference, understanding the reasons behind it is crucial, such as familiarity, content migration concerns, or lack of exposure to other platforms.
  • Evaluation of CMS options starts early, considering both client's editorial and end users' needs to recommend the right strategy.
  • Factors like design requirements, editorial workflows, organizational structures, and technical considerations play significant roles in CMS evaluation.
  • Technical aspects like performance, scalability, developer community, and tech stack are also key considerations during CMS evaluation.
  • The evaluation process involves collaboration and a deep understanding of project needs and constraints to find a CMS that fits well.
  • Commonly used CMS platforms include Wagtail, Statamic, and Payload, each offering unique strengths in terms of flexibility and content management.
  • Wagtail is suitable for complex editorial sites, Statamic excels in admin experience for static content, while Payload offers high customization potential.
  • Each CMS platform has its pros and cons, with considerations like customizability, scalability, content modeling, and ease of use guiding their selection.
  • Choosing the right CMS can significantly impact editorial team efficiency and content quality, aligning with the client's vision and goals.
  • The goal is to implement a CMS that enhances the editorial experience, allowing teams to focus on creating exceptional content.

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When to use OpenAI vs. open source LLMs in production

  • Choosing between OpenAI and open source Language Model Models (LLMs) involves considering factors like performance, customization, and cost.
  • OpenAI, with models like GPT-4 and GPT-3.5, offers state-of-the-art performance, while open source alternatives like Llama 3 and Mistral provide more control and customization options.
  • Factors affecting the choice include setup time, integration complexity, latency, cost structure, customization, developer experience, data privacy, and offline capability.
  • For frontend developers, OpenAI offers simplicity with API calls, quick prototyping, and predictable latency, whereas open source models require more infrastructure setup but allow for greater flexibility and customization.
  • Performance and user experience, cost implications, and customization differ between OpenAI and open source LLMs, impacting how AI features are integrated into frontend applications.
  • OpenAI is suitable for rapid prototyping and general-purpose AI features, while open source models excel in privacy-focused applications and specialized workflows.
  • Security considerations vary, with OpenAI requiring proper token handling and API security, while self-hosted open source models offer better data control and compliance.
  • Implementing LLM integration involves backend proxies for OpenAI and tools like Ollama for open source models, with libraries and frameworks simplifying integration complexities.
  • The future of LLM integration includes hybrid approaches, improved tooling for open source deployment, and browser-based inference for lightweight models directly in browsers.
  • The choice between OpenAI and open source LLMs depends on factors like cost, control, compliance, and specific project requirements, with potential for a hybrid approach based on evolving needs.

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UX designers vs. developers: Who really owns accessibility (A11y) in UX design?

  • Accessibility in UX design is not solely the responsibility of developers; designers play a crucial role from the beginning.
  • Designers must ensure that designs are accessible for all users, including those with disabilities like keyboard-only users.
  • Factors such as technical perception, lack of training, and poor team collaboration lead to accessibility issues in products.
  • Effective collaboration between designers and developers is essential to create accessible products.
  • Designers need to start integrating accessibility from the discovery and ideation stages throughout the product lifecycle.
  • Strategies include using tools like Stark and Figma plugins, implementing accessibility checklists, and prioritizing team education.
  • Shared tools for testing like Axe Devtools, Google Lighthouse, Silktide, and WAVE API help ensure ongoing accessibility compliance.
  • Fostering a culture of accessibility requires team education, collaborative workflows, and shared tools for testing at every stage of development.
  • Web accessibility is a necessity to ensure inclusive digital products that cater to diverse user needs.

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JSONObject Extract Keys Example

  • JSON (JavaScript Object Notation) is a lightweight data-interchange format commonly used for data transmission.
  • It can have flat key-value pairs or nested structures, affecting key access using dot or bracket notation.
  • Understanding both flat and nested keys is crucial for JSON data parsing and transformation in applications.
  • A Java example showcases extracting keys from JSON using JSONObject and recursive traversal.
  • The code traverses flat and nested keys, adding them to a list for subsequent processing.
  • Best practices include using notation for nested keys and handling JSONObjects and JSONArrays recursively.
  • Validating JSON structures before key extraction is advised for robustness, especially with dynamic data.
  • Extracting keys in Java involves thoughtful handling of JSON structures using recursion for effective data extraction.
  • The code output presents all keys, top-level and nested, in a readable dot and bracket notation format.
  • Developing skills in JSON processing is crucial, and subscribing to educational resources can aid in becoming proficient.

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Day 7: When Phone Detox Actually Works (And You Surprise Yourself)

  • The author discussed considering participating in a web development competition despite feeling rusty in frontend development skills.
  • The author acknowledged the need to refresh their JavaScript and CSS knowledge and catch up on new frameworks in web development.
  • Joining the competition could serve as motivation to dust off old skills and learn new ones, seen as 'networking' rather than distraction.
  • The author reflected on distinguishing intentional vs. compulsive phone use, noticing a difference during designated breaks compared to mindless scrolling.
  • Although not groundbreaking, these changes represent small steps toward personal progress and moving forward in the right direction.
  • The author acknowledged that these changes may not solve all productivity issues but are positive steps forward.

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Keycloak: The Modern Way to Secure Your Apps

  • Keycloak is an open-source IAM solution developed by Red Hat, offering authentication, authorization, SSO, social login, and user federation.
  • It is self-hosted, flexible, and powerful, similar to Auth0 or Firebase Auth.
  • Keycloak simplifies user, permissions, and roles management for web apps, mobile apps, or APIs.
  • Setting up Keycloak can be done using Docker or manual installation.
  • After installation, one can log in to the Keycloak Admin Console at http://localhost:8080 with admin/admin credentials.
  • Keycloak revolves around concepts like realms, clients, users, roles, and groups for configuration and security.
  • It supports OAuth2 and OpenID Connect by default.
  • Keycloak can be integrated with frontend applications for user authentication using various libraries like keycloak-js, react-keycloak, or passport-keycloak.
  • For apps requiring login and role-based access control, Keycloak is a valuable addition to the tech stack saving development time and supporting modern protocols.
  • Keycloak is an open-source tool that scales with the needs of developers.

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Why 90% of Developer SaaS Tools Fail in Year Two (Analysis of 50+ Failed Startups)

  • A developer tools startup recently announced its closure despite positive feedback from users and significant funding.
  • Many developer tools startups fail to sustain their businesses despite having products loved by engineers.
  • An analysis of 50+ failed developer tool startups revealed that technical quality did not guarantee business success.
  • The main reasons for failure were identified as business model and go-to-market challenges.
  • These companies typically faced challenges around the 18–24 month mark, hindering their growth and sustainability.

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Next.js Forgot to Design APIs. Tirne Didn’t.

  • Tirne aims to improve side effect tracing and performance in API development compared to Next.js.
  • Tirne offers declarative routes, explicit side effects, edge-native speed, and type-aligned logic.
  • Quick start with 'npx create-tirne-app' and performance benchmarks show Tirne's speed superiority.
  • Performance metrics like cold start, request latency, and requests/sec demonstrate Tirne's efficiency.
  • Tirne outperforms Next.js API Routes significantly in terms of speed and performance.
  • Examples of structured Tirne code for handling APIs are provided for easy understanding.
  • Tirne simplifies authentication handling and error management with clear structures and testability.
  • Error handling is built-in with Tirne, offering structured error responses and clean error boundaries.
  • Tirne encourages building APIs that are structured, testable, and explicit for better code understanding.

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Python Insider: Python 3.14.0 beta 3 is here!

  • Python 3.14.0 beta 3 is now available, as part of the Python 3.14 development cycle.
  • Beta releases like 3.14.0b3 allow the community to test new features and bug fixes before the final release.
  • Maintainers of third-party Python projects are encouraged to test with 3.14 and report any issues.
  • Python 3.14 is feature-complete in the beta phase, with minimal changes expected after the first release candidate.
  • Key features of Python 3.14 include support for free-threaded Python, deferred type annotation evaluation, and template string literals.
  • Other additions in Python 3.14 are multiple interpreters in the standard library, Zstandard compression support, and improved UUID module.
  • Python 3.14 also introduces enhancements in debugging, error messages, HMAC implementation, and remote attaching in the pdb module.
  • Build changes include using Sigstore for verifying release artifacts and providing an experimental JIT compiler in macOS and Windows binaries.
  • Incompatible changes, removals, and deprecations are documented for Python 3.14.
  • The Python installer for Windows is replaced by a new install manager, available from the Windows Store or FTP page.

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