How to save template in cache?

[alekdavisintel]

The README example shows how to render template from cache, but how do you add it to cache? I.e. what should happen if the cacheResult.Success is false?

var cacheResult = engine.Handler.Cache.RetrieveTemplate("templateKey");
if(cacheResult.Success)
{
	var templatePage = cacheResult.Template.TemplatePageFactory();
	string result = await engine.RenderTemplateAsync(templatePage, model);
}

Here is my code outline (my templates come from strings):

string tempateKey = "XYZ"; 
string templateHtml = "SOME RASOR TEXT"; // Original text has @ placeholders
dynamic model = new ExpandoObject(); // Set some properties below not showing for briefness

var engine = new RazorLightEngineBuilder()
	        .UseMemoryCachingProvider()
	        .Build();

TemplateCacheLookupResult cacheResult = engine.Handler.Cache.RetrieveTemplate(templateKey);

if (cacheResult.Success)
{
    // This code never executes.
    var templatePage = cacheResult.Template.TemplatePageFactory();

    result = await engine.RenderTemplateAsync(templatePage, model);
}
else
{
    // This code always executes.
    result = await engine.CompileRenderStringAsync(templateKey, templateHtml, model);
}

The code never gets into the if (cacheResult.Success) block. What am I doing wrong or not doing at all?

Thanks!

[bluesatyr]

I know it's been a while since you posted. I had the same issue as you did while I was attempting to populate emails with razor templates as part of a foreach loop.

RazorLight should be creating the cached template when calling CompileRenderStringAsync().

My issue was that I instantiated the engine inside of the loop, so a new instance was being created each time which did not have access to the previous cache. Maybe it's possible that was happening to you?

By instantiating before the loop, each iteration then had access to the cache. With caching the outcome was 60X faster than before!

Hope that helps if anyone else has the same issue.

[alekdavisintel]

Yes, thew problem is that in the controller class the object was recreated on every call, so the cached value was lost. I actually had my own wrapper object, so I added the RazorLight object as a static member and it took care of the issue. See #493