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use compound index to replace separate index for packs

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This commit is contained in:
Brian Gough 2015-12-24 11:29:46 +00:00
parent 0ba00a9eb7
commit 0532a4daaa
2 changed files with 13 additions and 10 deletions
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4
services/track-changes/app/coffee/MongoManager.coffee
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@ -136,9 +136,7 @@ module.exports = MongoManager =
# For finding all updates that go into a diff for a doc # For finding all updates that go into a diff for a doc
db.docHistory.ensureIndex { doc_id: 1, v: 1 }, { background: true } db.docHistory.ensureIndex { doc_id: 1, v: 1 }, { background: true }
# For finding all updates that affect a project # For finding all updates that affect a project
db.docHistory.ensureIndex { project_id: 1, "meta.end_ts": 1 }, { background: true } db.docHistory.ensureIndex { project_id: 1, "meta.end_ts": 1, "meta.start_ts": -1 }, { background: true }
# For finding all packs that affect a project (use a sparse index so only packs are included)
db.docHistory.ensureIndex { project_id: 1, "pack.0.meta.end_ts": 1, "meta.end_ts": 1}, { background: true, sparse: true }
# For finding updates that don't yet have a project_id and need it inserting # For finding updates that don't yet have a project_id and need it inserting
db.docHistory.ensureIndex { doc_id: 1, project_id: 1 }, { background: true } db.docHistory.ensureIndex { doc_id: 1, project_id: 1 }, { background: true }
# For finding project meta-data # For finding project meta-data

19
services/track-changes/app/coffee/PackManager.coffee
View file

@ -178,20 +178,25 @@ module.exports = PackManager =
.find(tailQuery, projection) .find(tailQuery, projection)
.sort(sort) .sort(sort)
# now find any packs that overlap with the time window # now find any packs that overlap with the time window from outside
# cutoff before
# --|-----wanted-range--|------------------ time=>
# |-------------|pack(end_ts)
#
# these were not picked up by the original query because
# end_ts>before but the beginning of the pack may be in the time range
overlapQuery = _.clone(query) overlapQuery = _.clone(query)
if before? && cutoff? if before? && cutoff?
overlapQuery['meta.end_ts'] = {"$gte": before} overlapQuery['meta.end_ts'] = {"$gte": before}
overlapQuery['pack.0.meta.end_ts'] = {"$lte": before } overlapQuery['meta.start_ts'] = {"$lte": before }
else if before? && not cutoff? else if before? && not cutoff?
overlapQuery['meta.end_ts'] = {"$gte": before} overlapQuery['meta.end_ts'] = {"$gte": before}
overlapQuery['pack.0.meta.end_ts'] = {"$lte": before } overlapQuery['meta.start_ts'] = {"$lte": before }
else if not before? && cutoff? else if not before? && cutoff?
overlapQuery['meta.end_ts'] = {"$gte": cutoff} overlapQuery['meta.end_ts'] = {"$gte": cutoff} # we already have these??
overlapQuery['pack.0.meta.end_ts'] = {"$gte": 0 }
else if not before? && not cutoff? else if not before? && not cutoff?
overlapQuery['meta.end_ts'] = {"$gte": 0 } overlapQuery['meta.end_ts'] = {"$gte": 0 } # shouldn't happen??
overlapQuery['pack.0.meta.end_ts'] = {"$gte": 0 }
overlap = collection overlap = collection
.find(overlapQuery, projection) .find(overlapQuery, projection)
.sort(sort) .sort(sort)