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👔 Refactor the featured post algo

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This commit is contained in:
LittleSheep
2025-08-12 12:13:39 +08:00
parent e66130e893
commit 05c6d67c03
2 changed files with 9 additions and 6 deletions
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14
DysonNetwork.Sphere/Post/PostService.cs
View File

@@ -740,14 +740,16 @@ public partial class PostService(
if (featuredIds is null)
{
// The previous day highest rated posts
var today = SystemClock.Instance.GetCurrentInstant();
var periodStart = today.InUtc().Date.AtStartOfDayInZone(DateTimeZone.Utc).ToInstant().Minus(Duration.FromDays(7));
var periodEnd = today.InUtc().Date.PlusDays(1).AtStartOfDayInZone(DateTimeZone.Utc).ToInstant();
var periodStart = today.InUtc().Date.AtStartOfDayInZone(DateTimeZone.Utc).ToInstant().Minus(Duration.FromDays(1));
var periodEnd = today.InUtc().Date.AtStartOfDayInZone(DateTimeZone.Utc).ToInstant();
var reactSocialPoints = await db.PostReactions
.Include(e => e.Post)
.Where(e => e.Post.Visibility == PostVisibility.Public)
.Where(e => e.CreatedAt >= periodStart && e.CreatedAt < periodEnd)
.Where(e => e.Post.CreatedAt >= periodStart && e.Post.CreatedAt < periodEnd)
.GroupBy(e => e.PostId)
.Select(e => new
{
@@ -755,12 +757,12 @@ public partial class PostService(
Count = e.Sum(r => r.Attitude == PostReactionAttitude.Positive ? 1 : -1)
})
.OrderByDescending(e => e.Count)
.Take(3)
.Take(5)
.ToDictionaryAsync(e => e.PostId, e => e.Count);
featuredIds = reactSocialPoints.Select(e => e.Key).ToList();
await cache.SetAsync(FeaturedPostCacheKey, featuredIds, TimeSpan.FromMinutes(5));
await cache.SetAsync(FeaturedPostCacheKey, featuredIds, TimeSpan.FromHours(24));
}
var posts = await db.Posts
@@ -810,4 +812,4 @@ public static class PostQueryExtensions
(e.Publisher.AccountId != null && userFriends.Contains(e.Publisher.AccountId.Value)) ||
publishersId.Contains(e.PublisherId));
}
}
}

1
DysonNetwork.sln.DotSettings.user
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@@ -104,6 +104,7 @@
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