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張 旭

Providers - Configuration Language | Terraform | HashiCorp Developer - 0 views

developer.hashicorp.com/...providers

terraform devops

shared by 張 旭 on 23 Jan 23 - No Cached
  • Terraform relies on plugins called providers to interact with cloud providers, SaaS providers, and other APIs.
  • Terraform configurations must declare which providers they require so that Terraform can install and use them.
  • Each provider adds a set of resource types and/or data sources that Terraform can manage.
  • ...6 more annotations...
  • Every resource type is implemented by a provider; without providers, Terraform can't manage any kind of infrastructure.
  • The Terraform Registry is the main directory of publicly available Terraform providers, and hosts providers for most major infrastructure platforms.
  • Dependency Lock File documents an additional HCL file that can be included with a configuration, which tells Terraform to always use a specific set of provider versions.
  • Terraform CLI finds and installs providers when initializing a working directory. It can automatically download providers from a Terraform registry, or load them from a local mirror or cache.
  • To save time and bandwidth, Terraform CLI supports an optional plugin cache. You can enable the cache using the plugin_cache_dir setting in the CLI configuration file.
  • you can use Terraform CLI to create a dependency lock file and commit it to version control along with your configuration.
張 旭

Dependency Lock File (.terraform.lock.hcl) - Configuration Language | Terraform | Hashi... - 0 views

developer.hashicorp.com/...dependency-lock

devops terraform

shared by 張 旭 on 21 Jan 23 - No Cached
  • Version constraints within the configuration itself determine which versions of dependencies are potentially compatible, but after selecting a specific version of each dependency Terraform remembers the decisions it made in a dependency lock file
  • At present, the dependency lock file tracks only provider dependencies.
  • Terraform does not remember version selections for remote modules, and so Terraform will always select the newest available module version that meets the specified version constraints.
  • ...14 more annotations...
  • The lock file is always named .terraform.lock.hcl, and this name is intended to signify that it is a lock file for various items that Terraform caches in the .terraform
  • Terraform automatically creates or updates the dependency lock file each time you run the terraform init command.
  • You should include this file in your version control repository
  • If a particular provider has no existing recorded selection, Terraform will select the newest available version that matches the given version constraint, and then update the lock file to include that selection.
  • the "trust on first use" model
  • you can pre-populate checksums for a variety of different platforms in your lock file using the terraform providers lock command, which will then allow future calls to terraform init to verify that the packages available in your chosen mirror match the official packages from the provider's origin registry.
  • The h1: and zh: prefixes on these values represent different hashing schemes, each of which represents calculating a checksum using a different algorithm.
  • zh:: a mnemonic for "zip hash"
  • h1:: a mnemonic for "hash scheme 1", which is the current preferred hashing scheme.
  • To determine whether there still exists a dependency on a given provider, Terraform uses two sources of truth: the configuration itself, and the state.
  • Version constraints within the configuration itself determine which versions of dependencies are potentially compatible, but after selecting a specific version of each dependency Terraform remembers the decisions it made in a dependency lock file so that it can (by default) make the same decisions again in future.
  • At present, the dependency lock file tracks only provider dependencies.
  • Terraform will always select the newest available module version that meets the specified version constraints.
  • The lock file is always named .terraform.lock.hcl
  • 張 旭 on 21 Jan 23
     
    "the overriding effect is compounded, with later blocks taking precedence over earlier blocks."
張 旭

Language Server Protocol - Wikipedia - 0 views

en.wikipedia.org/...Language_Server_Protocol

vim programming

shared by 張 旭 on 28 Jan 22 - No Cached
  • Modern IDEs provide developers with sophisticated features like code completion, refactoring, navigating to a symbol's definition, syntax highlighting, and error and warning markers.
  • an IDE needs a sophisticated understanding of the programming language that the program's source is written in.
  • Conventional compilers or interpreters for a specific programming language are typically unable to provide these language services, because they are written with the goal of either transforming the source code into object code or immediately executing the code.
  • ...5 more annotations...
  • Prior to the design and implementation of the Language Server Protocol for the development of Visual Studio Code, most language services were generally tied to a given IDE or other editor.
  • The Language Server Protocol allows for decoupling language services from the editor so that the services may be contained within a general purpose language server.
  • LSP is not restricted to programming languages. It can be used for any kind of text-based language, like specifications[7] or domain-specific languages (DSL).
  • When a user edits one or more source code files using a language server protocol-enabled tool, the tool acts as a client that consumes the language services provided by a language server.
  • The protocol does not make any provisions about how requests, responses and notifications are transferred between client and server.
crazylion lee

Flynn - The product that ops provides to developers - 1 views

flynn.io

hosting heroku opensource git

shared by crazylion lee on 17 Oct 16 - No Cached
  • crazylion lee on 17 Oct 16
     
    "Flynn is an open source platform (PaaS) for running applications in production. It does everything you need, out of the box:"
張 旭

Slimming Down Your Models and Controllers with Concerns, Service Objects, and Tableless... - 1 views

www.viget.com/...wn-your-models-and-controllers

rails development model pattern controller

shared by 張 旭 on 29 Nov 16 - No Cached
  • The single responsibility principle asserts that every class should have exactly one responsibility. In other words, each class should be concerned about one unique nugget of functionality
  • fat models are a little better than fat controllers
  • when every bit of functionality has been encapsulated into its own object, you find yourself repeating code a lot less.
  • ...2 more annotations...
  • objects with a single responsibility can easily be unit tested
  • a vanilla Rails 4 app directory contains models, views, controllers, and helpers does not mean you are restricted to those four domains.
crazylion lee

Cyclotron - 0 views

www.cyclotron.io

dashboard framework development web

shared by crazylion lee on 04 Dec 16 - No Cached
  • crazylion lee on 04 Dec 16
     
    "A web application for constructing dashboards."
crazylion lee

Fieldbook: Create a database, as easily as a spreadsheet - 0 views

fieldbook.com/developers

database spreadsheet javascript

shared by crazylion lee on 08 Dec 16 - No Cached
  • crazylion lee on 08 Dec 16
     
    "A database with an API - as simple as a spreadsheet"
crazylion lee

A ZFS developer's analysis of the good and bad in Apple's new APFS file system | Ars Te... - 0 views

arstechnica.com/...in-apples-new-apfs-file-system

zfs apple file system

shared by crazylion lee on 30 Jan 17 - No Cached
  • crazylion lee on 30 Jan 17
     
    "A ZFS developer's analysis of the good and bad in Apple's new APFS file system"
crazylion lee

saiprashanths/dl-setup: Instructions for setting up the software on your deep learning ... - 0 views

github.com/...dl-setup

deep learning development learning

shared by crazylion lee on 26 May 16 - No Cached
  • crazylion lee on 26 May 16
     
    "Instructions for setting up the software on your deep learning machine"
crazylion lee

ianstormtaylor/slate: A completely customizable framework for building rich text editor... - 0 views

github.com/...slate

Javascript development wysiwyg

shared by crazylion lee on 15 Jul 16 - No Cached
  • crazylion lee on 15 Jul 16
     
    "A completely customizable framework for building rich text editors in the browser."
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