.NET 9 中的 多级缓存 HybridCache示例详解

var builder = WebApplication.CreateBuilder(args);
// 注册 HybridCache 服务
builder.Services.AddHybridCache();
// 注册 Redis 缓存服务，为 HybridCache 提供分布式缓存
builder.Services.AddStackExchangeRedisCache(options =>
{
    options.Configuration = builder.Configuration.GetConnectionString("RedisConnectionString");
});
builder.Services.AddControllers();

[HttpGet("GetCache")]
public async Task<string[]> Get()
{
    return await _cache.GetOrCreateAsync(
        "a-1", async cancel => await Task.FromResult(Summaries)
    );
}

[HttpGet("DeleteCache")]
public async Task<bool> Delete()
{
    await _cache.RemoveAsync("a-1");
    return true;
}

[HttpGet("GetCacheByTag")]
public async Task<string[]> GetCacheByTag()
{
    var tags = new List<string> { "tag1", "tag2", "tag3" };
    var entryOptions = new HybridCacheEntryOptions
    {
        Expiration = TimeSpan.FromMinutes(1),
        LocalCacheExpiration = TimeSpan.FromMinutes(1)
    };
    return await _cache.GetOrCreateAsync(
        "a-1", async cancel => await Task.FromResult(Summaries),
        entryOptions, tags
    );
}

[HttpGet("DeleteCacheByTag")]
public async Task<bool> DeleteCacheByTag()
{
    var tags = new List<string> { "tag1" };
    await _cache.RemoveByTagAsync(tags);
    return true;
}