Application performance is often constrained not by the business logic itself, but by repetitive database queries and API calls. Caching is one of the most effective techniques to address this problem. By storing frequently accessed data in memory or a fast distributed store, applications can reduce latency, scale more effectively, and lower infrastructure costs.<\/p>\n\n\n\n
According to Microsoft, caching can reduce response times by up to 80%<\/strong> for frequently requested data (Microsoft Docs<\/a>). Similarly, Redis benchmarks demonstrate the ability to handle millions of requests per second<\/strong> with sub-millisecond latency (Redis Labs<\/a>).<\/p>\n\n\n\n Caching is the process of storing data in a faster medium for repeated access. Instead of querying a database or an external API on every request, the result is stored and reused for a defined period.<\/p>\n\n\n\n The benefits are clear:<\/p>\n\n\n\n To demonstrate the impact, consider a service call that takes ~200ms:<\/p>\n\n\n\n This represents a two orders of magnitude improvement<\/strong> with a simple caching layer.<\/p>\n\n\n\n The simplest option is For cloud and multi-server applications, .NET provides ASP.NET Core includes built-in support for response caching, allowing entire HTTP responses to be cached.<\/p>\n\n\n\n This approach reduces server load and is effective for content that does not change frequently.<\/p>\n\n\n\n Hybrid caching is an advanced strategy supported in ASP.NET Core 9.0+<\/strong> that blends in-memory caching<\/strong> with a distributed cache<\/strong> (like Redis).<\/p>\n\n\n\n The main idea:<\/p>\n\n\n\n This reduces latency<\/strong> while still keeping data consistent across a multi-server or cloud environment.<\/p>\n\n\n\n Developers can then inject and use Reference:<\/strong> Microsoft Docs \u2013 Hybrid Caching in ASP.NET Core<\/a><\/p>\n<\/blockquote>\n\n\n\n At InSync Software<\/strong>, we often implement hybrid caching<\/strong> in modern SaaS solutions. It allows us to deliver sub-millisecond response times while ensuring consistency across multiple nodes \u2014 a balance many businesses need when scaling to thousands of users.<\/p>\n\n\n\n Appropriate scenarios:<\/strong><\/p>\n\n\n\n Avoid caching:<\/strong><\/p>\n\n\n\n Caching in .NET offers substantial performance improvements with relatively low implementation effort.<\/p>\n\n\n\n At InSync Software<\/strong>, we leverage these caching strategies when designing custom solutions for clients. Whether it\u2019s improving responsiveness in high-traffic APIs, scaling multi-tenant SaaS platforms, or reducing cloud costs, caching consistently proves to be one of the highest-impact optimizations.<\/p>\n\n\n\n The key is to cache selectively<\/strong>: cache data that is expensive to compute or fetch, and that does not require constant freshness. When applied strategically, caching can improve responsiveness by over 100x while reducing infrastructure costs.e reducing infrastructure costs.<\/p>\n\n\n\n References<\/strong><\/p>\n\n\n\n <\/p>\n","protected":false},"excerpt":{"rendered":" Application performance is often constrained not by the business logic itself, but by repetitive database queries and API calls. Caching is one of the most effective techniques to address this problem. By storing frequently accessed data in memory or a fast distributed store, applications can reduce latency, scale more effectively, and lower infrastructure costs. According […]<\/p>\n","protected":false},"author":1,"featured_media":197,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"pagelayer_contact_templates":[],"_pagelayer_content":"","footnotes":""},"categories":[18],"tags":[37,30,20,19],"class_list":["post-194","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-software-development","tag-net","tag-c","tag-coding","tag-software"],"_links":{"self":[{"href":"https:\/\/www.insync.co.za\/blog\/wp-json\/wp\/v2\/posts\/194","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.insync.co.za\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.insync.co.za\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.insync.co.za\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.insync.co.za\/blog\/wp-json\/wp\/v2\/comments?post=194"}],"version-history":[{"count":2,"href":"https:\/\/www.insync.co.za\/blog\/wp-json\/wp\/v2\/posts\/194\/revisions"}],"predecessor-version":[{"id":199,"href":"https:\/\/www.insync.co.za\/blog\/wp-json\/wp\/v2\/posts\/194\/revisions\/199"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.insync.co.za\/blog\/wp-json\/wp\/v2\/media\/197"}],"wp:attachment":[{"href":"https:\/\/www.insync.co.za\/blog\/wp-json\/wp\/v2\/media?parent=194"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.insync.co.za\/blog\/wp-json\/wp\/v2\/categories?post=194"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.insync.co.za\/blog\/wp-json\/wp\/v2\/tags?post=194"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\n\n\n\nWhat is Caching?<\/h2>\n\n\n\n
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\n\n\n\nBenchmark: With and Without Cache<\/h2>\n\n\n\n
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\n\n\n\nCaching Options in .NET<\/h2>\n\n\n\n
1. In-Memory Cache<\/h3>\n\n\n\n
IMemoryCache<\/code>, which stores data in the application\u2019s memory.<\/p>\n\n\n\nvar cache = new MemoryCache(new MemoryCacheOptions());\ncache.Set(\"CurrentTime\", DateTime.Now, TimeSpan.FromMinutes(5));\n\nif (cache.TryGetValue(\"CurrentTime\", out DateTime cachedTime))\n{\n Console.WriteLine($\"Cached Time: {cachedTime}\");\n}\n<\/code><\/pre>\n\n\n\n\n
\n\n\n\n2. Distributed Cache<\/h3>\n\n\n\n
IDistributedCache<\/code>, with implementations such as Redis, SQL Server, and NCache.<\/p>\n\n\n\npublic async Task<string> GetWeatherAsync()\n{\n var cacheKey = \"weather-today\";\n var cached = await _cache.GetStringAsync(cacheKey);\n\n if (cached != null) return cached;\n\n var weather = \"Sunny\"; \/\/ Simulated API call\n\n await _cache.SetStringAsync(cacheKey, weather, \n new DistributedCacheEntryOptions\n {\n AbsoluteExpirationRelativeToNow = TimeSpan.FromMinutes(30)\n });\n\n return weather;\n}\n<\/code><\/pre>\n\n\n\n\n
\n\n\n\n3. Response and Output Caching<\/h3>\n\n\n\n
[ResponseCache(Duration = 60)]\npublic IActionResult Index()\n{\n return View();\n}\n<\/code><\/pre>\n\n\n\n4. Hybrid Caching<\/h3>\n\n\n\n
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Example:<\/h3>\n\n\n\n
builder.Services.AddHybridCache(options =>\n{\n options.DefaultEntryOptions = new HybridCacheEntryOptions\n {\n Expiration = TimeSpan.FromMinutes(5)\n };\n});\n<\/code><\/pre>\n\n\n\nIHybridCache<\/code> to store and retrieve items efficiently:<\/p>\n\n\n\npublic class WeatherService\n{\n private readonly IHybridCache _cache;\n\n public WeatherService(IHybridCache cache) => _cache = cache;\n\n public async Task<string> GetForecastAsync(string city)\n {\n return await _cache.GetOrCreateAsync(\n key: $\"forecast-{city}\",\n factory: async cancel =>\n {\n \/\/ Fetch from source if not cached\n await Task.Delay(50, cancel); \n return $\"Forecast for {city} at {DateTime.Now}\";\n },\n options: new HybridCacheEntryOptions\n {\n Expiration = TimeSpan.FromMinutes(10)\n });\n }\n}\n<\/code><\/pre>\n\n\n\nWhy Hybrid Matters<\/h3>\n\n\n\n
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IHybridCache<\/code>.<\/li>\n<\/ul>\n\n\n\n\n
\n\n\n\nWhen to Use Caching<\/h2>\n\n\n\n
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\n\n\n\nConclusion<\/h2>\n\n\n\n
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