how to get connection string from appsettings.json in .net core in class library code example

Example 1: how to get connection string value from appsettings.json in .net core

{
  "ConnectionStrings": {
    "myDb1": "Server=myServer;Database=myDb1;Trusted_Connection=True;",
    "myDb2": "Server=myServer;Database=myDb2;Trusted_Connection=True;"
  }
}

Example 2: how to get connection string value from appsettings.json in .net core

string logDbConnectionString = _configuration.GetValue<string>("Modules:Logging:logDb"); // read logDb connection string example
string tenantsDbConnectionString = _configuration.GetValue<string>("Modules:Tenants:tenantsDb"); // read tenantsDb connection string example