Aspnetcore-angular-universal: Browser caching (Azure) and Minify JavaScript on build

Created on 24 Jan 2018 · 6Comments · Source: TrilonIO/aspnetcore-angular-universal

Great work on version 5.0 @MarkPieszak :heart:

Want to show a really nice image I got after uploading the new version to Azure.
(Did comment out the translate part)

Google PageSpeed Insights results

That is very close to a perfect score from Google Pagespeed insight!

The only thing missing is Minifying the .js files, it would be nice to add this to the build process.

This is already in the webpack.config.js so I guess this is meant to be added at some point

        // new webpack.optimize.UglifyJsPlugin({
        //   compress: false,
        //   mangle: false
        // }),
        // Plugins that apply in production builds only

Second part, this might be just a Azure thing, but I haven't been able to set the expiration date of the files.

I tried adding this to web.config:

<staticContent>
  <clientCache cacheControlMode="UseMaxAge" cacheControlMaxAge="7.00:00:00" />
</staticContent>
<httpProtocol>
  <customHeaders>
    <add name="Cache-Control" value="public" />
  </customHeaders>
</httpProtocol>

But I still get

http://angularuniversal.azurewebsites.net/dist/0.js (expiration not specified)
http://angularuniversal.azurewebsites.net/dist/main-client.js (expiration not specified)
http://angularuniversal.azurewebsites.net/dist/vendor.js (expiration not specified)

Does anyone know a solution for this?

HOW TO - Guide

Source

hakonamatata

❤1 🎉1 👍1

Most helpful comment

In your startup.cs you can write

app.UseStaticFiles(new StaticFileOptions()
            {
                OnPrepareResponse = context =>
                {
                    //Do not add cache to json files. We need to have new versions when we add new translations.

                    if(!context.Context.Request.Path.Value.Contains(".json")) { 
                        context.Context.Response.GetTypedHeaders().CacheControl = new CacheControlHeaderValue()
                        {
                            MaxAge = TimeSpan.FromDays(30) //Cache everything except json for 30 days
                        };
                    } else {
                        context.Context.Response.GetTypedHeaders().CacheControl = new CacheControlHeaderValue()
                        {
                            MaxAge = TimeSpan.FromMinutes(15) //Cache json for 15 minutes
                        };
                    }
                }
            });

This will add 30 days cache to all files except .json files.

Flood on 24 Jan 2018

👍2 🎉1

All 6 comments

In your startup.cs you can write

app.UseStaticFiles(new StaticFileOptions()
            {
                OnPrepareResponse = context =>
                {
                    //Do not add cache to json files. We need to have new versions when we add new translations.

                    if(!context.Context.Request.Path.Value.Contains(".json")) { 
                        context.Context.Response.GetTypedHeaders().CacheControl = new CacheControlHeaderValue()
                        {
                            MaxAge = TimeSpan.FromDays(30) //Cache everything except json for 30 days
                        };
                    } else {
                        context.Context.Response.GetTypedHeaders().CacheControl = new CacheControlHeaderValue()
                        {
                            MaxAge = TimeSpan.FromMinutes(15) //Cache json for 15 minutes
                        };
                    }
                }
            });

This will add 30 days cache to all files except .json files.

Flood on 24 Jan 2018

👍2 🎉1

So the problem with Uglify is that it'd complicate the build process a bit, in that - if you truly want to "Uglify", you can't have a Vendor file. So we'd have different ones for Dev & Prod.

All of that leg work and complicated webpack builds has been setup in the CLI, so when we move to that - we'll immediately get to reap all the benefits :)

Glad it's working so far for everyone though ! :+1: Pumped.

MarkPieszak on 24 Jan 2018

Thanks @Flood, that worked perfectly!

Added this to Startup.cs:

      // app.UseStaticFiles();

      app.UseStaticFiles(new StaticFileOptions()
      {
        OnPrepareResponse = c =>
        {
          //Do not add cache to json files. We need to have new versions when we add new translations.

          if (!c.Context.Request.Path.Value.Contains(".json"))
          {
            c.Context.Response.GetTypedHeaders().CacheControl = new CacheControlHeaderValue()
            {
              MaxAge = TimeSpan.FromDays(30) // Cache everything except json for 30 days
            };
          }
          else
          {
            c.Context.Response.GetTypedHeaders().CacheControl = new CacheControlHeaderValue()
            {
              MaxAge = TimeSpan.FromMinutes(15) // Cache json for 15 minutes
            };
          }
        }
      });

30 day caching