63 lines
2.0 KiB
C#
63 lines
2.0 KiB
C#
using ConsoleApp2.Options;
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using Microsoft.Extensions.DependencyInjection;
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using StackExchange.Redis;
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namespace ConsoleApp2.Cache;
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public class RedisCache : ICacher
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{
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private readonly IDatabase _db;
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public string KeyPrefix { get; set; }
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public RedisCache(IConnectionMultiplexer conn, int dataBase, string keyPrefix = "")
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{
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_db = conn.GetDatabase(dataBase);
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KeyPrefix = keyPrefix;
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}
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public async Task<string?> GetStringAsync(string key)
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{
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var value = await _db.StringGetAsync($"{KeyPrefix}{key}");
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return !value.HasValue ? null : value.ToString();
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}
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public async Task SetStringAsync(string key, string value)
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{
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if (!await _db.StringSetAsync($"{KeyPrefix}{key}", value))
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throw new RedisCommandException("设置Redis缓存失败");
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}
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public Task<bool> ExistsAsync(string key)
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{
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return _db.KeyExistsAsync($"{KeyPrefix}{key}");
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}
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public Task SetHashAsync(string key, IReadOnlyDictionary<string, string> hash)
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{
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return _db.HashSetAsync($"{KeyPrefix}{key}", hash.Select(pair => new HashEntry(pair.Key, pair.Value)).ToArray());
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}
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public async Task<Dictionary<string, string>> GetHashAsync(string key)
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{
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var entries = await _db.HashGetAllAsync($"{KeyPrefix}{key}");
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var result = new Dictionary<string, string>();
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foreach (var entry in entries)
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{
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result.Add(entry.Name.ToString(), entry.Value.ToString());
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}
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return result;
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}
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}
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public static class RedisCacheExtensions
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{
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public static IServiceCollection AddRedisCache(this IServiceCollection services, RedisCacheOptions options)
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{
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var conn = ConnectionMultiplexer.Connect(options.Configuration
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?? throw new ApplicationException("未配置Redis连接字符串"));
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services.AddSingleton<ICacher>(new RedisCache(conn, options.Database, options.InstanceName));
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return services;
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}
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} |