Cache access across services #4773

7 Answer(s)

• 

  0

  maliming created one year ago

  Support Team Fullstack Developer

  hi

  Can you share some code to reproduce?

  Had you checked the cache on Redis?

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• 

  0

  moinahmed created one year ago

  I'm sharing the code below; removing/obfuscating many things for privacy but have included bare-minimum set that give you a clear idea.

  Here's module code:

  [DependsOn(
  	typeof(AbpAutoMapperModule),        
  	typeof(AbpCachingModule)
  	)]
  public class CustomModule : AbpModule
  {
  	public override void ConfigureServices(ServiceConfigurationContext context)
  	{
  		var configuration = context.Services.GetConfiguration();
  		Configure<AbpAutoMapperOptions>(options => {
  			options.AddMaps<CustomModule>();
  		});
  	}
  
  	public override void OnApplicationInitialization(ApplicationInitializationContext context)
  	{
  		var service = context
  			.ServiceProvider
  			.GetRequiredService<CustomInit>();
  		service.Initialize();
  	}
  }
  

  Init class:

  public class CustomInit : ISingletonDependency
  {
  	private IDistributedCache<CacheItem> _cache;	
  
  	public CustomInit(
  		IDistributedCache<CacheItem> cache)
  	{
  		_cache = cache;
  	}
  
  	public void Initialize()
  	{
  		// load records from API
  		var records = client.Records.GetAllAsync(request).Result;
  
  		// initialize abp cache
  		foreach (var rec in records) {
  			_cache.SetAsync(
  				rec.Id, // Cache key
  				new CacheItem { Id = rec.Id, Name = rec.Name }, // Cache value
  				new DistributedCacheEntryOptions { SlidingExpiration = TimeSpan.FromDays(1000) } // Cache options
  			);
  		}
  	}
  }
  

  Service class where I'm accessing cache:

  public class CustomService : ApplicationService, ICustomService, ITransientDependency
  {        
  	private IDistributedCache<CacheItem> _cache;
  	
  	public CustomService(
  		IDistributedCache<CacheItem> cache)
  	{
  		_cache = cache;
  	}
  
  	public async Task<CacheItem> GetAsync(string id)
  	{            
  		var rec = await _cache.GetAsync(id); // rec is always null
  		return rec;		
  	}
  }
  

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• 

  0

  maliming created one year ago

  Support Team Fullstack Developer

  Had you checked the cache on Redis?

  You can try to change the current tenant to host

  public async Task<CacheItem> GetAsync(string id)
  {       
      using (_currentTenant.Change(null))
      {
          var rec = await _cache.GetAsync(id);
          return rec;	
      }     
      	
  }
  

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• 

  0

  moinahmed created one year ago

  Our cache needs are very limited and in-memory/in-process is sufficient for it; that's why do not want to try Redis.

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• 

  0

  maliming created one year ago

  Support Team Fullstack Developer

  ok, can you try to change the current tenant to host?

  If it still not working, I will try to reproduce it in a new project.

  You can also try to reproduce it.

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• 

  0

  moinahmed created one year ago

  It didn't work; I tried a new project too. Were you able to reproduce at your end?

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• 

  0

  maliming created one year ago

  Support Team Fullstack Developer

  Can you share a project and then I will check it locally?

  liming.ma@volosoft.com

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