部署 Angular 8 应用后如何执行缓存清除

Question

部署 Angular 8 应用后如何执行缓存清除

6

我有一个 Angular 8 应用程序，部署后经常收到最终用户的投诉，他们无法看到新功能。我需要加入缓存破坏吗？在进行了一些谷歌搜索后，我看到了以下命令：

ng build --output-hashing=all

我的问题是，使用 Angular 8 CLI 的 ng build --prod 命令是否考虑了缓存破坏，或者我需要在部署步骤中添加以下命令。我还想知道如何测试它。

我的 angular.json 文件

{
  "$schema": "./node_modules/@angular/cli/lib/config/schema.json",
  "version": 1,
  "newProjectRoot": "projects",
  "projects": {
    "quickapp": {
      "projectType": "application",
      "schematics": {
        "@schematics/angular:component": {
          "style": "css"
        }
      },
      "root": "",
      "sourceRoot": "src",
      "prefix": "app",
      "architect": {
        "build": {
          "builder": "@angular-devkit/build-angular:browser",
          "options": {
            "outputPath": "dist",
            "index": "src/index.html",
            "main": "src/main.ts",
            "polyfills": "src/polyfills.ts",
            "tsConfig": "src/tsconfig.app.json",
            "aot": false,
            "assets": [
              "src/favicon.ico",
              "src/assets"
            ],
            "styles": [
              "src/styles.css",
              "src/app/assets/styles/components/buttons.css",
              "src/app/assets/styles/components/forms.css",
              "src/app/assets/styles/components/inputs.css",
              "./node_modules/bootstrap/dist/css/bootstrap.min.css",
              "./node_modules/bootstrap-datepicker/dist/css/bootstrap-datepicker.min.css"
            ],
            "scripts": [
              "./node_modules/jquery/dist/jquery.min.js",
              "./node_modules/bootstrap/dist/js/bootstrap.js",
              "./node_modules/bootstrap-toggle/js/bootstrap-toggle.js",
              "./node_modules/bootstrap-select/dist/js/bootstrap-select.js",
              "./node_modules/bootstrap-datepicker/dist/js/bootstrap-datepicker.js",
              "./node_modules/moment/moment.js",
              "./src/app/assets/scripts/drive-js.js",
              "./src/app/assets/scripts/external-js.js"
            ]
          },
          "configurations": {
            "production": {
              "fileReplacements": [
                {
                  "replace": "src/environments/environment.ts",
                  "with": "src/environments/environment.prod.ts"
                }
              ],
              "optimization": true,
              "outputHashing": "all",
              "sourceMap": false,
              "extractCss": true,
              "namedChunks": false,
              "aot": true,
              "extractLicenses": true,
              "vendorChunk": false,
              "buildOptimizer": true,
              "budgets": [
                {
                  "type": "initial",
                  "maximumWarning": "2mb",
                  "maximumError": "5mb"
                },
                {
                  "type": "anyComponentStyle",
                  "maximumWarning": "6kb",
                  "maximumError": "400kb"
                }
              ]
            }
          }
        },
        "serve": {
          "builder": "@angular-devkit/build-angular:dev-server",
          "options": {
            "browserTarget": "quickapp:build"
          },
          "configurations": {
            "production": {
              "browserTarget": "quickapp:build:production"
            }
          }
        },
        "extract-i18n": {
          "builder": "@angular-devkit/build-angular:extract-i18n",
          "options": {
            "browserTarget": "quickapp:build"
          }
        },
        "test": {
          "builder": "@angular-devkit/build-angular:karma",
          "options": {
            "main": "src/test.ts",
            "polyfills": "src/polyfills.ts",
            "tsConfig": "tsconfig.spec.json",
            "karmaConfig": "karma.conf.js",
            "assets": [
              "src/favicon.ico",
              "src/assets"
            ],
            "styles": [
              "src/styles.css"
            ],
            "scripts": []
          }
        },
        "lint": {
          "builder": "@angular-devkit/build-angular:tslint",
          "options": {
            "tsConfig": [
              "tsconfig.app.json",
              "tsconfig.spec.json",
              "e2e/tsconfig.json"
            ],
            "exclude": [
              "**/node_modules/**"
            ]
          }
        },
        "e2e": {
          "builder": "@angular-devkit/build-angular:protractor",
          "options": {
            "protractorConfig": "e2e/protractor.conf.js",
            "devServerTarget": "quickapp:serve"
          },
          "configurations": {
            "production": {
              "devServerTarget": "quickapp:serve:production"
            }
          }
        }
      }
    }},
  "defaultProject": "quickapp"
}

- Tom

1个回答

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- karoluS · Accepted Answer

如您在angular.json输出中所见，默认情况下启用了哈希。问题可能是您的用户正在缓存index.html文件，因此他不知道新块的存在。这也可能是由于未被Angular“哈希”的缓存静态文件造成的问题。请参阅https://stackoverflow.com/Questions/728616/disable-cache-for-some-images

    "configurations": {
            "production": {
              "fileReplacements": [
                {
                  "replace": "src/environments/environment.ts",
                  "with": "src/environments/environment.prod.ts"
                }
              ],
              "optimization": true,
              "outputHashing": "all", <---- enabled by default
              "sourceMap": false,
              "extractCss": true,
              "namedChunks": false,
              "aot": true,
              "extractLicenses": true,
              "vendorChunk": false,
              "buildOptimizer": true,
              "budgets": [
                {
                  "type": "initial",
                  "maximumWarning": "2mb",
                  "maximumError": "5mb"
                }
              ]
            }