{"id":14,"date":"2023-02-15T20:55:00","date_gmt":"2023-02-15T20:55:00","guid":{"rendered":""},"modified":"2024-09-20T18:35:49","modified_gmt":"2024-09-20T17:35:49","slug":"high-level-vs-low-level-design","status":"publish","type":"post","link":"https:\/\/debuggersspace.com\/index.php\/2023\/02\/15\/high-level-vs-low-level-design\/","title":{"rendered":"High level vs low level design ?"},"content":{"rendered":"
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\n \t<\/i> Read Time:<\/span>1 Minute, 32 Second <\/div>\n\n <\/div>

1. High-Level Design (HLD)<\/h2>\n

Overview:<\/strong> HLD is the macro-level design phase that provides a broad view of the system. It outlines the architecture and major components of the system and their interactions.<\/p>\n

Focus:<\/h3>\n
    \n
  • System architecture (e.g., client-server, microservices)<\/li>\n
  • Technology stack (e.g., programming languages, databases, frameworks)<\/li>\n
  • Major modules and how they interact<\/li>\n
  • Communication protocols between components<\/li>\n<\/ul>\n

    Audience:<\/h3>\n

    HLD is primarily for architects, project managers, and clients who need to understand the overall structure of the system.<\/p>\n

    Purpose:<\/h3>\n

    HLD ensures the system is aligned with business requirements, helping in resource planning and timeline estimation.<\/p>\n

    2. Low-Level Design (LLD)<\/h2>\n

    Overview:<\/strong> LLD is the micro-level design phase that details the inner workings of individual components. It describes how each module will be implemented.<\/p>\n

    Focus:<\/h3>\n
      \n
    • Detailed logic for each module<\/li>\n
    • Data structures and database schemas<\/li>\n
    • API definitions and workflows<\/li>\n
    • Pseudocode or code snippets<\/li>\n
    • Error handling and validation logic<\/li>\n<\/ul>\n

      Audience:<\/h3>\n

      LLD is mainly for developers who will use this detailed information to write code.<\/p>\n

      Purpose:<\/h3>\n

      LLD ensures that every component is designed optimally and integrates seamlessly with the system.<\/p>\n

      Key Differences between HLD and LLD<\/h2>\n\n\n\n\n\n\n\n\n\n\n
      Aspect<\/th>\nHigh-Level Design (HLD)<\/th>\nLow-Level Design (LLD)<\/th>\n<\/tr>\n<\/thead>\n
      Purpose<\/strong><\/td>\nOverall system structure and architecture<\/td>\nDetailed design of individual components<\/td>\n<\/tr>\n
      Abstraction<\/strong><\/td>\nHigh (bird’s eye view)<\/td>\nLow (detailed implementation)<\/td>\n<\/tr>\n
      Audience<\/strong><\/td>\nArchitects, Project Managers, Clients<\/td>\nDevelopers<\/td>\n<\/tr>\n
      Components<\/strong><\/td>\nModules, system architecture, integration<\/td>\nDetailed logic, data structures, APIs<\/td>\n<\/tr>\n
      Outcome<\/strong><\/td>\nArchitecture diagrams, technology stack<\/td>\nCode, database schema, pseudocode, detailed designs<\/td>\n<\/tr>\n
      Focus<\/strong><\/td>\nWhat components exist and how they interact<\/td>\nHow each component is built and functions<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      Example:<\/h2>\n

      HLD:<\/strong> In a social media app, HLD would describe the architecture (e.g., microservices), key modules like user management, post creation, and how they communicate.<\/p>\n

      LLD:<\/strong> LLD would define the data structures, algorithms for sorting posts, database schema for users and posts, and specific API calls for each module.<\/p>\n<\/section>\n","protected":false},"excerpt":{"rendered":"

      1. High-Level Design (HLD) Overview: HLD is the macro-level design phase that provides a broad view of the system. It outlines the architecture and major components of the system and their interactions. Focus: System architecture (e.g., client-server, microservices) Technology stack (e.g., programming languages, databases, frameworks) Major modules and how they interact Communication protocols between components […]<\/p>\n","protected":false},"author":43,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","footnotes":""},"categories":[107,11,12,121],"tags":[150],"class_list":["post-14","post","type-post","status-publish","format-standard","hentry","category-architect","category-happiestmind","category-solution-architect","category-system-design","tag-systemdesign"],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false},"uagb_author_info":{"display_name":"Himanshu Namdeo","author_link":"https:\/\/debuggersspace.com\/author\/admin\/"},"uagb_comment_info":2,"uagb_excerpt":"1. High-Level Design (HLD) Overview: HLD is the macro-level design phase that provides a broad view of the system. It outlines the architecture and major components of the system and their interactions. Focus: System architecture (e.g., client-server, microservices) Technology stack (e.g., programming languages, databases, frameworks) Major modules and how they interact Communication protocols between components…","_links":{"self":[{"href":"https:\/\/debuggersspace.com\/index.php\/wp-json\/wp\/v2\/posts\/14"}],"collection":[{"href":"https:\/\/debuggersspace.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/debuggersspace.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/debuggersspace.com\/index.php\/wp-json\/wp\/v2\/users\/43"}],"replies":[{"embeddable":true,"href":"https:\/\/debuggersspace.com\/index.php\/wp-json\/wp\/v2\/comments?post=14"}],"version-history":[{"count":6,"href":"https:\/\/debuggersspace.com\/index.php\/wp-json\/wp\/v2\/posts\/14\/revisions"}],"predecessor-version":[{"id":618,"href":"https:\/\/debuggersspace.com\/index.php\/wp-json\/wp\/v2\/posts\/14\/revisions\/618"}],"wp:attachment":[{"href":"https:\/\/debuggersspace.com\/index.php\/wp-json\/wp\/v2\/media?parent=14"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/debuggersspace.com\/index.php\/wp-json\/wp\/v2\/categories?post=14"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/debuggersspace.com\/index.php\/wp-json\/wp\/v2\/tags?post=14"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}