If it was all mixed up, even the Terminator itself would not be able to locate Sarah Connor. In the "Terminator" movie, T-800, while trying to find Sarah Connor, navigates to the desired page and quickly finds all contacts named Sarah Connor to terminate them. In phone books, all entries are listed in alphabetical order, so you can easily jump to a specific page and find your contact. Fortunately, in real life, you don't have to deal with unorganized phone books.īefore the IT revolution, phone books were quite common. How much time would you spend locating all the Connors and then finding the right Connor. Now, imagine that this phone book has millions of names and locations, and all these records are mixed and have no particular order. The name that you are looking for is Sarah Connor. Imagine that it’s the 1980s, and you need to locate a name in a phone book. This topic covers Rails’ basic approaches for effective queries using PostgreSQL as a database. Int this article, we will dive into indexes, which hold all the necessary meta data to effectively query records from a database.
Rails postgres app how to#
To make the process fast and efficient, we need to know how to structure not only the data but also information about where each record or a set of records are located. News websites, social networks, discussion forums, and your banking app have one thing in common: the need to retrieve information from a database.
Rails postgres app pdf#
Ruby (170) Honeybadger (76) Rails (50) JavaScript (35) PHP (24) Python (16) Laravel (14) Briefing (13) DevOps (9) Go (9) Elixir (8) Briefing 2021 Q3 (7) FounderQuest (6) Briefing 2021 Q2 (6) Node (6) Aws (6) Django (6) Conferences (5) Security (4) Developer Tools (4) Testing (4) Heroku (3) Debugging (3) Docker (3) Events (2) Jekyll (2) Startup Advice (2) Guest Post (2) Sidekiq (2) Serverless (2) Git (2) Front End (2) Rspec (2) Elastic Beanstalk (2) Oauth (2) React (2) Logging (2) Case Studies (1) Performance (1) Allocation Stats (1) Integrations (1) Bitbucket (1) Mobile (1) Gophercon (1) Clients (1) Vue (1) Lambda (1) Turbolinks (1) Redis (1) CircleCI (1) GitHub (1) Crystal (1) Stripe (1) Saas (1) Graphql (1) Elasticsearch (1) Import Maps (1) Build Systems (1) Minitest (1) Guzzle (1) Tdd (1) I18n (1) Github Actions (1) Sql (1) Postgresql (1) Xdebug (1) Zend Debugger (1) Phpdbg (1) Pdf (1) Multithreading (1) Concurrency (1) Web Workers (1) Fargate (1) Websockets (1) Markdown (1) Active Record (1) Django Q (1) Celery (1) Amazon S3 (1) Aws Lambda (1) Amazon Textract (1) Sucrase (1) Babel (1)Įxtracting data from databases is a major task of most Web applications.
0 kommentar(er)
