{
  "lang": [
    [
      "go",
      "golang"
    ],
    [
      "c#",
      "dotnet core",
      "dotnet 5"
    ],
    "nodejs",
    "javascript",
    "angular"
  ],
  "db": [
    [
      "elasticsearch",
      "mongodb",
      "redis",
      "couchbase"
    ],
    [
      "mssql",
      "postgre",
      "sqlite"
    ]
  ],
  "os": [
    "linux",
    [
      "macosx",
      "macos"
    ],
    "win"
  ]
}