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Optimize profile caching strategy

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Zed 2020-06-09 18:19:20 +02:00
parent ba9ba3a55e
commit 61d27efd69
2 changed files with 20 additions and 8 deletions
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4
src/redis_cache.nim
View file

@ -85,12 +85,14 @@ proc getProfileId*(username: string): Future[string] {.async.} =
if result == redisNil:
result.setLen(0)
proc getCachedProfile*(username: string; fetch=true): Future[Profile] {.async.} =
proc getCachedProfile*(username: string; fetch=true;
cache=false): Future[Profile] {.async.} =
let prof = await get("p:" & toLower(username))
if prof != redisNil:
uncompress(prof).thaw(result)
elif fetch:
result = await getProfile(username)
if cache: await cache(result)
proc getCachedPhotoRail*(id: string): Future[PhotoRail] {.async.} =
if id.len == 0: return

24
src/routes/timeline.nim
View file

@ -23,17 +23,23 @@ proc fetchSingleTimeline*(after: string; query: Query; skipRail=false):
let name = query.fromUser[0]
var
profile = await getCachedProfile(name, fetch=false)
profile: Profile
profileId = await getProfileId(name)
fetched = false
if profile.username.len == 0 and profileId.len == 0:
profile = await getProfile(name)
profileId = profile.id
await cacheProfileId(profile.username, profile.id)
if profileId.len == 0:
profile = await getCachedProfile(name)
profileId = if profile.suspended: "s"
else: profile.id
await cacheProfileId(profile.username, profileId)
fetched = true
if profile.suspended or profile.protected or profileId.len == 0:
if profileId.len == 0 or profile.protected:
result[0] = profile
return
elif profileId == "s":
result[0] = Profile(username: name, suspended: true)
return
var rail: Future[PhotoRail]
if skipRail or query.kind == media:
@ -51,14 +57,18 @@ proc fetchSingleTimeline*(after: string; query: Query; skipRail=false):
timeline.query = query
var found = false
for tweet in timeline.content.mitems:
if tweet.profile.id == profileId or
tweet.profile.username.cmpIgnoreCase(name) == 0:
profile = tweet.profile
found = true
break
if profile.username.len == 0:
profile = await getCachedProfile(name)
profile = await getCachedProfile(name, cache=true)
if fetched and not found:
await cache(profile)
return (profile, timeline, await rail)