public static void UpdateCacheLine(string id, DateTime validUntil, string data)
{
CacheLine line = null;
using (CacheDbContext ctx = new CacheDbContext())
{
line = ctx.CacheLines.Where(e => string.Equals(e.Id, id)).FirstOrDefault();
}
if (line is null)
{
line = new CacheLine
{
Id = id,
ValidUntil = validUntil,
Data = data
};
line.Add();
}
else
{
line.ValidUntil = validUntil;
line.Data = data;
line.Update();
}
}
/// <summary>
/// Checks if there exists a <see cref="CacheLine"/> for the given <paramref name="id"/> which is still valid.
/// </summary>
/// <param name="id">The ID of the <see cref="CacheLine"/>.</param>
/// <returns>The cached data in case there exists a valid <see cref="CacheLine"/>. Else, null.</returns>
public static string GetCacheLine(string id)
{
CacheLine line = null;
using (CacheDbContext ctx = new CacheDbContext())
{
line = ctx.CacheLines.Where(e => string.Equals(e.Id, id)).FirstOrDefault();
}
return(!(line is null) && (line.ValidUntil > DateTime.Now) ? line.Data : null);
}
