public async Task <MessageHistroy> GetMessageHistory(string who, string toWhom)
{
var messageHistoryKey = keyGenerator.GenerateForMessageHistory(who, toWhom);
var messageHistoryJson = await context.Redis.StringGetAsync(messageHistoryKey);
if (messageHistoryJson.IsNullOrEmpty)
{
var participants = new List <string>()
{
who, toWhom
};
return(new MessageHistroy(messageHistoryKey, participants, new List <MessageEntity>()));
}
var messageHistory = JsonConvert.DeserializeObject <MessageHistroy>(messageHistoryJson);
return(messageHistory);
}