count dids for all events, totals by create/up/del · aly.codes/microcosm-rs@a32a20f

+1 -1

ufos/fuzz/fuzz_targets/counts_value.rs

··· 19 19 assert_eq!(serialized.len(), n); 20 20 let (and_back, n_again) = CountsValue::from_db_bytes(&serialized).unwrap(); 21 21 assert_eq!(n_again, n); 22 - assert_eq!(and_back.records(), counts_value.records()); 22 + assert_eq!(and_back.counts(), counts_value.counts()); 23 23 assert_eq!(and_back.dids().estimate(), counts_value.dids().estimate()); 24 24 } 25 25 });

+9

ufos/src/db_types.rs

··· 104 104 } 105 105 } 106 106 107 + impl<P: DbBytes + Default, S: DbBytes + Default> Default for DbConcat<P, S> { 108 + fn default() -> Self { 109 + Self { 110 + prefix: Default::default(), 111 + suffix: Default::default(), 112 + } 113 + } 114 + } 115 + 107 116 impl<P: DbBytes + std::fmt::Debug, S: DbBytes + std::fmt::Debug> fmt::Debug for DbConcat<P, S> { 108 117 fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { 109 118 write!(f, "DbConcat<{:?} || {:?}>", self.prefix, self.suffix)

+71 -25

ufos/src/lib.rs

··· 27 27 28 28 #[derive(Debug, Default, Clone)] 29 29 pub struct CollectionCommits<const LIMIT: usize> { 30 - pub total_seen: usize, 30 + pub creates: usize, 31 + pub updates: usize, 32 + pub deletes: usize, 31 33 pub dids_estimate: Sketch<14>, 32 34 pub commits: Vec<UFOsCommit>, 33 35 head: usize, 34 - non_creates: usize, 35 36 } 36 37 37 38 impl<const LIMIT: usize> CollectionCommits<LIMIT> { ··· 41 42 self.head = 0; 42 43 } 43 44 } 45 + /// lossy-ish commit insertion 46 + /// 47 + /// - new commits are *always* added to the batch or else rejected as full. 48 + /// - when LIMIT is reached, new commits can displace existing `creates`. 49 + /// `update`s and `delete`s are *never* displaced. 50 + /// - if all batched `creates` have been displaced, the batch is full. 51 + /// 52 + /// in general it's rare for commits to be displaced except for very high- 53 + /// volume collections such as `app.bsky.feed.like`. 54 + /// 55 + /// it could be nice in the future to retain all batched commits and just 56 + /// drop new `creates` after a limit instead. 44 57 pub fn truncating_insert( 45 58 &mut self, 46 59 commit: UFOsCommit, 47 60 sketch_secret: &SketchSecretPrefix, 48 61 ) -> Result<(), BatchInsertError> { 49 - if self.non_creates == LIMIT { 62 + if (self.updates + self.deletes) == LIMIT { 63 + // nothing can be displaced (only `create`s may be displaced) 50 64 return Err(BatchInsertError::BatchFull(commit)); 51 65 } 52 - let did = commit.did.clone(); 53 - let is_create = commit.action.is_create(); 66 + 67 + // every kind of commit counts as "user activity" 68 + self.dids_estimate 69 + .insert(did_element(sketch_secret, &commit.did)); 70 + 71 + match commit.action { 72 + CommitAction::Put(PutAction { 73 + is_update: false, .. 74 + }) => { 75 + self.creates += 1; 76 + } 77 + CommitAction::Put(PutAction { 78 + is_update: true, .. 79 + }) => { 80 + self.updates += 1; 81 + } 82 + CommitAction::Cut => { 83 + self.deletes += 1; 84 + } 85 + } 86 + 54 87 if self.commits.len() < LIMIT { 88 + // normal insert: there's space left to put a new commit at the end 55 89 self.commits.push(commit); 56 - if self.commits.capacity() > LIMIT { 57 - self.commits.shrink_to(LIMIT); // save mem?????? maybe?? 58 - } 59 90 } else { 91 + // displacement insert: find an old `create` we can displace 60 92 let head_started_at = self.head; 61 93 loop { 62 94 let candidate = self ··· 74 106 } 75 107 } 76 108 77 - if is_create { 78 - self.total_seen += 1; 79 - self.dids_estimate.insert(did_element(sketch_secret, &did)); 80 - } else { 81 - self.non_creates += 1; 82 - } 83 - 84 109 Ok(()) 85 110 } 86 111 } ··· 179 204 .truncating_insert(commit, sketch_secret)?; 180 205 Ok(()) 181 206 } 182 - pub fn total_records(&self) -> usize { 183 - self.commits_by_nsid.values().map(|v| v.commits.len()).sum() 184 - } 185 - pub fn total_seen(&self) -> usize { 186 - self.commits_by_nsid.values().map(|v| v.total_seen).sum() 187 - } 188 207 pub fn total_collections(&self) -> usize { 189 208 self.commits_by_nsid.len() 190 209 } ··· 237 256 #[derive(Debug, Serialize, JsonSchema)] 238 257 pub struct NsidCount { 239 258 nsid: String, 240 - records: u64, 259 + creates: u64, 241 260 dids_estimate: u64, 242 261 } 243 262 244 263 #[derive(Debug, Serialize, JsonSchema)] 245 264 pub struct JustCount { 246 - records: u64, 265 + creates: u64, 247 266 dids_estimate: u64, 248 267 } 249 268 ··· 309 328 &[0u8; 16], 310 329 )?; 311 330 312 - assert_eq!(commits.total_seen, 3); 331 + assert_eq!(commits.creates, 3); 313 332 assert_eq!(commits.dids_estimate.estimate(), 1); 314 333 assert_eq!(commits.commits.len(), 2); 315 334 ··· 333 352 } 334 353 335 354 #[test] 355 + fn test_truncating_insert_counts_updates() -> anyhow::Result<()> { 356 + let mut commits: CollectionCommits<2> = Default::default(); 357 + 358 + commits.truncating_insert( 359 + UFOsCommit { 360 + cursor: Cursor::from_raw_u64(100), 361 + did: Did::new("did:plc:whatever".to_string()).unwrap(), 362 + rkey: RecordKey::new("rkey-asdf-a".to_string()).unwrap(), 363 + rev: "rev-asdf".to_string(), 364 + action: CommitAction::Put(PutAction { 365 + record: RawValue::from_string("{}".to_string())?, 366 + is_update: true, 367 + }), 368 + }, 369 + &[0u8; 16], 370 + )?; 371 + 372 + assert_eq!(commits.creates, 0); 373 + assert_eq!(commits.updates, 1); 374 + assert_eq!(commits.deletes, 0); 375 + assert_eq!(commits.dids_estimate.estimate(), 1); 376 + assert_eq!(commits.commits.len(), 1); 377 + Ok(()) 378 + } 379 + 380 + #[test] 336 381 fn test_truncating_insert_does_not_truncate_deletes() -> anyhow::Result<()> { 337 382 let mut commits: CollectionCommits<2> = Default::default(); 338 383 ··· 375 420 &[0u8; 16], 376 421 )?; 377 422 378 - assert_eq!(commits.total_seen, 2); 423 + assert_eq!(commits.creates, 2); 424 + assert_eq!(commits.deletes, 1); 379 425 assert_eq!(commits.dids_estimate.estimate(), 1); 380 426 assert_eq!(commits.commits.len(), 2); 381 427

+5 -3

ufos/src/server.rs

··· 109 109 consumer, 110 110 }) 111 111 } 112 + 113 + // TODO: replace with normal (🙃) multi-qs value somehow 112 114 fn to_multiple_nsids(s: &str) -> Result<HashSet<Nsid>, String> { 113 115 let mut out = HashSet::new(); 114 116 for collection in s.split(',') { ··· 197 199 } 198 200 #[derive(Debug, Serialize, JsonSchema)] 199 201 struct TotalCounts { 200 - total_records: u64, 202 + total_creates: u64, 201 203 dids_estimate: u64, 202 204 } 203 205 /// Get total records seen by collection ··· 218 220 let mut seen_by_collection = HashMap::with_capacity(collections.len()); 219 221 220 222 for collection in &collections { 221 - let (total_records, dids_estimate) = storage 223 + let (total_creates, dids_estimate) = storage 222 224 .get_counts_by_collection(collection) 223 225 .await 224 226 .map_err(|e| HttpError::for_internal_error(format!("boooo: {e:?}")))?; ··· 226 228 seen_by_collection.insert( 227 229 collection.to_string(), 228 230 TotalCounts { 229 - total_records, 231 + total_creates, 230 232 dids_estimate, 231 233 }, 232 234 );

+66 -62

ufos/src/storage_fjall.rs

··· 2 2 use crate::error::StorageError; 3 3 use crate::storage::{StorageResult, StorageWhatever, StoreBackground, StoreReader, StoreWriter}; 4 4 use crate::store_types::{ 5 - AllTimeDidsKey, AllTimeRecordsKey, AllTimeRollupKey, CountsValue, CursorBucket, 5 + AllTimeDidsKey, AllTimeRecordsKey, AllTimeRollupKey, CommitCounts, CountsValue, CursorBucket, 6 6 DeleteAccountQueueKey, DeleteAccountQueueVal, HourTruncatedCursor, HourlyDidsKey, 7 7 HourlyRecordsKey, HourlyRollupKey, HourlyRollupStaticPrefix, JetstreamCursorKey, 8 8 JetstreamCursorValue, JetstreamEndpointKey, JetstreamEndpointValue, LiveCountsKey, ··· 507 507 } 508 508 out.push(NsidCount { 509 509 nsid: nsid.to_string(), 510 - records: merged.records(), 510 + creates: merged.counts().creates, 511 511 dids_estimate: merged.dids().estimate() as u64, 512 512 }); 513 513 } ··· 607 607 } 608 608 let mut ranked: Vec<(Nsid, CountsValue)> = ranked.into_iter().collect(); 609 609 match order { 610 - OrderCollectionsBy::RecordsCreated => ranked.sort_by_key(|(_, c)| c.records()), 610 + OrderCollectionsBy::RecordsCreated => ranked.sort_by_key(|(_, c)| c.counts().creates), 611 611 OrderCollectionsBy::DidsEstimate => ranked.sort_by_key(|(_, c)| c.dids().estimate()), 612 612 OrderCollectionsBy::Lexi { .. } => unreachable!(), 613 613 } ··· 617 617 .take(limit) 618 618 .map(|(nsid, cv)| NsidCount { 619 619 nsid: nsid.to_string(), 620 - records: cv.records(), 620 + creates: cv.counts().creates, 621 621 dids_estimate: cv.dids().estimate() as u64, 622 622 }) 623 623 .collect(); ··· 746 746 } 747 747 } 748 748 Ok(( 749 - total_counts.records(), 749 + total_counts.counts().creates, 750 750 total_counts.dids().estimate() as u64, 751 751 )) 752 752 } ··· 973 973 .unwrap_or_default(); 974 974 975 975 // now that we have values, we can know the exising ranks 976 - let before_records_count = rolled.records(); 976 + let before_creates_count = rolled.counts().creates; 977 977 let before_dids_estimate = rolled.dids().estimate() as u64; 978 978 979 979 // update the rollup 980 980 rolled.merge(&counts); 981 981 982 - // replace rank entries 983 - let (old_records, new_records, dids) = match rollup { 984 - Rollup::Hourly(hourly_cursor) => { 985 - let old_records = 986 - HourlyRecordsKey::new(hourly_cursor, before_records_count.into(), &nsid); 987 - let new_records = old_records.with_rank(rolled.records().into()); 988 - let new_estimate = rolled.dids().estimate() as u64; 989 - let dids = if new_estimate == before_dids_estimate { 990 - None 991 - } else { 992 - let old_dids = 993 - HourlyDidsKey::new(hourly_cursor, before_dids_estimate.into(), &nsid); 994 - let new_dids = old_dids.with_rank(new_estimate.into()); 995 - Some((old_dids.to_db_bytes()?, new_dids.to_db_bytes()?)) 996 - }; 997 - (old_records.to_db_bytes()?, new_records.to_db_bytes()?, dids) 998 - } 999 - Rollup::Weekly(weekly_cursor) => { 1000 - let old_records = 1001 - WeeklyRecordsKey::new(weekly_cursor, before_records_count.into(), &nsid); 1002 - let new_records = old_records.with_rank(rolled.records().into()); 1003 - let new_estimate = rolled.dids().estimate() as u64; 1004 - let dids = if new_estimate == before_dids_estimate { 1005 - None 1006 - } else { 1007 - let old_dids = 1008 - WeeklyDidsKey::new(weekly_cursor, before_dids_estimate.into(), &nsid); 1009 - let new_dids = old_dids.with_rank(new_estimate.into()); 1010 - Some((old_dids.to_db_bytes()?, new_dids.to_db_bytes()?)) 1011 - }; 1012 - (old_records.to_db_bytes()?, new_records.to_db_bytes()?, dids) 1013 - } 1014 - Rollup::AllTime => { 1015 - let old_records = AllTimeRecordsKey::new(before_records_count.into(), &nsid); 1016 - let new_records = old_records.with_rank(rolled.records().into()); 1017 - let new_estimate = rolled.dids().estimate() as u64; 1018 - let dids = if new_estimate == before_dids_estimate { 1019 - None 1020 - } else { 1021 - let old_dids = AllTimeDidsKey::new(before_dids_estimate.into(), &nsid); 1022 - let new_dids = old_dids.with_rank(new_estimate.into()); 1023 - Some((old_dids.to_db_bytes()?, new_dids.to_db_bytes()?)) 1024 - }; 1025 - (old_records.to_db_bytes()?, new_records.to_db_bytes()?, dids) 1026 - } 1027 - }; 982 + // new ranks 983 + let new_creates_count = rolled.counts().creates; 984 + let new_dids_estimate = rolled.dids().estimate() as u64; 1028 985 1029 - // replace the ranks 1030 - batch.remove(&self.rollups, &old_records); 1031 - batch.insert(&self.rollups, &new_records, ""); 1032 - if let Some((old_dids, new_dids)) = dids { 1033 - batch.remove(&self.rollups, &old_dids); 1034 - batch.insert(&self.rollups, &new_dids, ""); 986 + // update create-ranked secondary index if rank changed 987 + if new_creates_count != before_creates_count { 988 + let (old_k, new_k) = match rollup { 989 + Rollup::Hourly(cursor) => ( 990 + HourlyRecordsKey::new(cursor, before_creates_count.into(), &nsid) 991 + .to_db_bytes()?, 992 + HourlyRecordsKey::new(cursor, new_creates_count.into(), &nsid) 993 + .to_db_bytes()?, 994 + ), 995 + Rollup::Weekly(cursor) => ( 996 + WeeklyRecordsKey::new(cursor, before_creates_count.into(), &nsid) 997 + .to_db_bytes()?, 998 + WeeklyRecordsKey::new(cursor, new_creates_count.into(), &nsid) 999 + .to_db_bytes()?, 1000 + ), 1001 + Rollup::AllTime => ( 1002 + AllTimeRecordsKey::new(before_creates_count.into(), &nsid).to_db_bytes()?, 1003 + AllTimeRecordsKey::new(new_creates_count.into(), &nsid).to_db_bytes()?, 1004 + ), 1005 + }; 1006 + batch.remove(&self.rollups, &old_k); // TODO: when fjall gets weak delete, this will hopefully work way better 1007 + batch.insert(&self.rollups, &new_k, ""); 1008 + } 1009 + 1010 + // update dids-ranked secondary index if rank changed 1011 + if new_dids_estimate != before_dids_estimate { 1012 + let (old_k, new_k) = match rollup { 1013 + Rollup::Hourly(cursor) => ( 1014 + HourlyDidsKey::new(cursor, before_dids_estimate.into(), &nsid) 1015 + .to_db_bytes()?, 1016 + HourlyDidsKey::new(cursor, new_dids_estimate.into(), &nsid) 1017 + .to_db_bytes()?, 1018 + ), 1019 + Rollup::Weekly(cursor) => ( 1020 + WeeklyDidsKey::new(cursor, before_dids_estimate.into(), &nsid) 1021 + .to_db_bytes()?, 1022 + WeeklyDidsKey::new(cursor, new_dids_estimate.into(), &nsid) 1023 + .to_db_bytes()?, 1024 + ), 1025 + Rollup::AllTime => ( 1026 + AllTimeDidsKey::new(before_dids_estimate.into(), &nsid).to_db_bytes()?, 1027 + AllTimeDidsKey::new(new_dids_estimate.into(), &nsid).to_db_bytes()?, 1028 + ), 1029 + }; 1030 + batch.remove(&self.rollups, &old_k); // TODO: when fjall gets weak delete, this will hopefully work way better 1031 + batch.insert(&self.rollups, &new_k, ""); 1035 1032 } 1036 1033 1037 - // replace the rollup 1034 + // replace the main counts rollup 1038 1035 batch.insert(&self.rollups, &rollup_key_bytes, &rolled.to_db_bytes()?); 1039 1036 } 1040 1037 ··· 1114 1111 } 1115 1112 } 1116 1113 let live_counts_key: LiveCountsKey = (latest, &nsid).into(); 1117 - let counts_value = CountsValue::new(commits.total_seen as u64, commits.dids_estimate); 1114 + let counts_value = CountsValue::new( 1115 + CommitCounts { 1116 + creates: commits.creates as u64, 1117 + updates: commits.updates as u64, 1118 + deletes: commits.deletes as u64, 1119 + }, 1120 + commits.dids_estimate, 1121 + ); 1118 1122 batch.insert( 1119 1123 &self.rollups, 1120 1124 &live_counts_key.to_db_bytes()?, ··· 1838 1842 ); 1839 1843 write.insert_batch(batch.batch)?; 1840 1844 1841 - let (records, dids) = read.get_counts_by_collection(&collection)?; 1842 - assert_eq!(records, 1); 1845 + let (creates, dids) = read.get_counts_by_collection(&collection)?; 1846 + assert_eq!(creates, 1); 1843 1847 assert_eq!(dids, 1); 1844 1848 1845 1849 let records = read.get_records_by_collections([collection].into(), 2, false)?;

+12 -5

ufos/src/storage_mem.rs

··· 5 5 use crate::error::StorageError; 6 6 use crate::storage::{StorageResult, StorageWhatever, StoreBackground, StoreReader, StoreWriter}; 7 7 use crate::store_types::{ 8 - AllTimeRollupKey, CountsValue, DeleteAccountQueueKey, DeleteAccountQueueVal, 8 + AllTimeRollupKey, CommitCounts, CountsValue, DeleteAccountQueueKey, DeleteAccountQueueVal, 9 9 HourTruncatedCursor, HourlyRollupKey, JetstreamCursorKey, JetstreamCursorValue, 10 10 JetstreamEndpointKey, JetstreamEndpointValue, LiveCountsKey, NewRollupCursorKey, 11 11 NewRollupCursorValue, NsidRecordFeedKey, NsidRecordFeedVal, RecordLocationKey, ··· 483 483 } 484 484 } 485 485 Ok(( 486 - total_counts.records(), 486 + total_counts.counts().creates, 487 487 total_counts.dids().estimate() as u64, 488 488 )) 489 489 } ··· 724 724 assert_eq!(n, tripppin.len()); 725 725 assert_eq!(counts.prefix, and_back.prefix); 726 726 assert_eq!(counts.dids().estimate(), and_back.dids().estimate()); 727 - if counts.records() > 20000000 { 727 + if counts.counts().creates > 20000000 { 728 728 panic!("COUNTS maybe wtf? {counts:?}") 729 729 } 730 730 // assert_eq!(rolled, and_back); ··· 737 737 assert_eq!(n, tripppin.len()); 738 738 assert_eq!(rolled.prefix, and_back.prefix); 739 739 assert_eq!(rolled.dids().estimate(), and_back.dids().estimate()); 740 - if rolled.records() > 20000000 { 740 + if rolled.counts().creates > 20000000 { 741 741 panic!("maybe wtf? {rolled:?}") 742 742 } 743 743 // assert_eq!(rolled, and_back); ··· 804 804 } 805 805 } 806 806 let live_counts_key: LiveCountsKey = (latest, &nsid).into(); 807 - let counts_value = CountsValue::new(commits.total_seen as u64, commits.dids_estimate); 807 + let counts_value = CountsValue::new( 808 + CommitCounts { 809 + creates: commits.creates as u64, 810 + updates: commits.updates as u64, 811 + deletes: commits.deletes as u64, 812 + }, 813 + commits.dids_estimate, 814 + ); 808 815 batch.insert( 809 816 &self.rollups, 810 817 &live_counts_key.to_db_bytes()?,

+39 -23

ufos/src/store_types.rs

··· 209 209 ) 210 210 } 211 211 } 212 - #[derive(Debug, PartialEq, Decode, Encode)] 213 - pub struct TotalRecordsValue(pub u64); 214 - impl UseBincodePlz for TotalRecordsValue {} 215 212 216 - #[derive(Debug, PartialEq, serde::Serialize, serde::Deserialize)] 213 + #[derive(Debug, Clone, Copy, Default, PartialEq, Decode, Encode)] 214 + pub struct CommitCounts { 215 + pub creates: u64, 216 + pub updates: u64, 217 + pub deletes: u64, 218 + } 219 + impl CommitCounts { 220 + pub fn merge(&mut self, other: &Self) { 221 + self.creates += other.creates; 222 + self.updates += other.updates; 223 + self.deletes += other.deletes; 224 + } 225 + } 226 + impl UseBincodePlz for CommitCounts {} 227 + 228 + #[derive(Debug, Default, PartialEq, serde::Serialize, serde::Deserialize)] 217 229 pub struct EstimatedDidsValue(pub Sketch<14>); 218 230 impl SerdeBytes for EstimatedDidsValue {} 219 231 impl DbBytes for EstimatedDidsValue { ··· 236 248 } 237 249 } 238 250 239 - pub type CountsValue = DbConcat<TotalRecordsValue, EstimatedDidsValue>; 251 + pub type CountsValue = DbConcat<CommitCounts, EstimatedDidsValue>; 240 252 impl CountsValue { 241 - pub fn new(total: u64, dids: Sketch<14>) -> Self { 253 + pub fn new(counts: CommitCounts, dids: Sketch<14>) -> Self { 242 254 Self { 243 - prefix: TotalRecordsValue(total), 255 + prefix: counts, 244 256 suffix: EstimatedDidsValue(dids), 245 257 } 246 258 } 247 - pub fn records(&self) -> u64 { 248 - self.prefix.0 259 + pub fn counts(&self) -> CommitCounts { 260 + self.prefix 249 261 } 250 262 pub fn dids(&self) -> &Sketch<14> { 251 263 &self.suffix.0 252 264 } 253 265 pub fn merge(&mut self, other: &Self) { 254 - self.prefix.0 += other.records(); 255 - self.suffix.0.merge(other.dids()); 256 - } 257 - } 258 - impl Default for CountsValue { 259 - fn default() -> Self { 260 - Self { 261 - prefix: TotalRecordsValue(0), 262 - suffix: EstimatedDidsValue(Sketch::<14>::default()), 263 - } 266 + self.prefix.merge(&other.prefix); 267 + self.suffix.0.merge(&other.suffix.0); 264 268 } 265 269 } 266 270 impl From<&CountsValue> for JustCount { 267 271 fn from(cv: &CountsValue) -> Self { 268 272 Self { 269 - records: cv.records(), 273 + creates: cv.counts().creates, 270 274 dids_estimate: cv.dids().estimate() as u64, 271 275 } 272 276 } ··· 608 612 #[cfg(test)] 609 613 mod test { 610 614 use super::{ 611 - CountsValue, Cursor, CursorBucket, Did, EncodingError, HourTruncatedCursor, 615 + CommitCounts, CountsValue, Cursor, CursorBucket, Did, EncodingError, HourTruncatedCursor, 612 616 HourlyRollupKey, Nsid, Sketch, HOUR_IN_MICROS, WEEK_IN_MICROS, 613 617 }; 614 618 use crate::db_types::DbBytes; ··· 642 646 Did::new(format!("did:plc:inze6wrmsm7pjl7yta3oig7{i}")).unwrap(), 643 647 )); 644 648 } 645 - let original = CountsValue::new(123, estimator.clone()); 649 + let original = CountsValue::new( 650 + CommitCounts { 651 + creates: 123, 652 + ..Default::default() 653 + }, 654 + estimator.clone(), 655 + ); 646 656 let serialized = original.to_db_bytes()?; 647 657 let (restored, bytes_consumed) = CountsValue::from_db_bytes(&serialized)?; 648 658 assert_eq!(restored, original); ··· 653 663 Did::new(format!("did:plc:inze6wrmsm7pjl7yta3oig{i}")).unwrap(), 654 664 )); 655 665 } 656 - let original = CountsValue::new(123, estimator); 666 + let original = CountsValue::new( 667 + CommitCounts { 668 + creates: 123, 669 + ..Default::default() 670 + }, 671 + estimator, 672 + ); 657 673 let serialized = original.to_db_bytes()?; 658 674 let (restored, bytes_consumed) = CountsValue::from_db_bytes(&serialized)?; 659 675 assert_eq!(restored, original);

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