facebook / squangle
File Change Frequency

File change frequency (churn) shows the distribution of file updates (days with at least one commit).

File Change Frequency Overall
File Change Frequency Overall
The number of recorded file updates
  • There are 41 files with 9,394 lines of code.
    • 1 files changed more than 100 times (1,537 lines of code)
    • 4 files changed 51-100 times (2,316 lines of code)
    • 9 files changed 21-50 times (3,589 lines of code)
    • 16 files changed 6-20 times (1,303 lines of code)
    • 11 files changed 1-5 times (649 lines of code)
16% | 24% | 38% | 13% | 6%
Legend:
101+
51-100
21-50
6-20
1-5
explore: zoomable circles | data
File Change Frequency per File Extension
h, cpp, md, txt, json
File Change Frequency per Extension
The number of recorded file updates
101+
51-100
21-50
6-20
1-5
cpp30% | 21% | 25% | 18% | 4%
h0% | 28% | 52% | 8% | 9%
File Change Frequency per Logical Decomposition
primary
primary (file change frequency)
The number of recorded file updates
101+
51-100
21-50
6-20
1-5
mysql_client17% | 26% | 38% | 10% | 7%
logger0% | 0% | 37% | 62% | 0%
base0% | 0% | 0% | 95% | 4%
Most Frequently Changed Files (Top 41)

See data for all files...

File# lines# unitslast modified
(days ago)		created
(days ago)		# changes# contributors
Operation.cpp
in squangle/mysql_client
 1537 92 14 2612 120 35
Operation.h
in squangle/mysql_client
 988 54 76 2612 97 26
AsyncMysqlClient.cpp
in squangle/mysql_client
 252 19 52 2617 79 31
AsyncMysqlClient.h
in squangle/mysql_client
 260 20 74 2521 75 28
AsyncConnectionPool.cpp
in squangle/mysql_client
 816 43 39 2430 53 24
AsyncConnectionPool.h
in squangle/mysql_client
 574 44 22 2612 43 22
Query.h
in squangle/mysql_client
 365 18 31 2618 32 22
DBEventLogger.h
in squangle/logger
 182 5 83 2596 29 12
Row.h
in squangle/mysql_client
 356 47 70 2599 28 16
DbResult.cpp
in squangle/mysql_client
 362 27 83 2292 28 10
DbResult.h
in squangle/mysql_client
 438 38 83 2612 26 13
Query.cpp
in squangle/mysql_client
 523 35 83 2618 25 19
Connection.h
in squangle/mysql_client
 425 37 76 2612 22 11
Connection.cpp
in squangle/mysql_client
 364 33 74 2464 21 11
DBEventLogger.cpp
in squangle/logger
 37 4 83 2596 19 10
SSLOptionsProviderBase.h
in squangle/mysql_client
 27 1 34 2383 13 7
DBEventCounter.h
in squangle/logger
 187 28 29 2464 13 9
FutureAdapter.cpp
in squangle/mysql_client
 147 14 77 2292 12 10
Row.cpp
in squangle/mysql_client
 242 18 83 2292 12 9
QueryBenchmark.cpp
in squangle/mysql_client
 245 11 83 2195 11 10
ExceptionUtil.h
in squangle/base
 27 - 83 2116 8 5
SSLOptionsProviderBase.cpp
in squangle/mysql_client
 34 2 83 2019 8 5
ClientPool.h
in squangle/mysql_client
 66 7 83 2111 8 7
FutureAdapter.h
in squangle/mysql_client
 28 - 83 2292 7 6
AsyncHelpers.cpp
in squangle/mysql_client
 30 2 83 2350 7 5
OperationBatch.cpp
in squangle/mysql_client
 44 4 83 2292 7 6
DBEventCounter.cpp
in squangle/logger
 75 5 29 2464 7 5
AsyncHelpers.h
in squangle/mysql_client
 19 - 83 2292 6 5
ConnectionKey.h
in squangle/base
 43 1 83 2480 6 5
ConnectionKey.cpp
in squangle/base
 52 2 83 2016 6 5
OperationBatch.h
in squangle/mysql_client
 37 1 83 2612 5 5
Compression.h
in squangle/mysql_client
 19 - 83 247 4 1
Compression.cpp
in squangle/mysql_client
 57 3 83 247 4 2
MysqlClientBase.h
in squangle/mysql_client
 109 5 56 85 4 1
SyncMysqlClient.h
in squangle/mysql_client
 131 21 56 85 4 1
SyncMysqlClient.cpp
in squangle/mysql_client
 12 1 56 85 3 1
MysqlConnectionHolder.cpp
in squangle/mysql_client
 55 2 76 85 3 2
MysqlClientBase.cpp
in squangle/mysql_client
 91 6 56 85 3 1
MysqlConnectionHolder.h
in squangle/mysql_client
 98 12 76 85 3 2
Base.h
in squangle/base
 6 - 83 85 2 1
MysqlHandler.h
in squangle/mysql_client
 34 - 83 308 2 2
Files With Most Contributors (Top 41)
Files sorted by the number of unique email addresses found in commits.

See data for all files...

File# lines# unitslast modified
(days ago)		created
(days ago)		# changes# contributors
Operation.cpp
in squangle/mysql_client
 1537 92 14 2612 120 35
Operation.h
in squangle/mysql_client
 988 54 76 2612 97 26
AsyncMysqlClient.cpp
in squangle/mysql_client
 252 19 52 2617 79 31
AsyncMysqlClient.h
in squangle/mysql_client
 260 20 74 2521 75 28
AsyncConnectionPool.cpp
in squangle/mysql_client
 816 43 39 2430 53 24
AsyncConnectionPool.h
in squangle/mysql_client
 574 44 22 2612 43 22
Query.h
in squangle/mysql_client
 365 18 31 2618 32 22
DBEventLogger.h
in squangle/logger
 182 5 83 2596 29 12
DbResult.cpp
in squangle/mysql_client
 362 27 83 2292 28 10
Row.h
in squangle/mysql_client
 356 47 70 2599 28 16
DbResult.h
in squangle/mysql_client
 438 38 83 2612 26 13
Query.cpp
in squangle/mysql_client
 523 35 83 2618 25 19
Connection.h
in squangle/mysql_client
 425 37 76 2612 22 11
Connection.cpp
in squangle/mysql_client
 364 33 74 2464 21 11
DBEventLogger.cpp
in squangle/logger
 37 4 83 2596 19 10
SSLOptionsProviderBase.h
in squangle/mysql_client
 27 1 34 2383 13 7
DBEventCounter.h
in squangle/logger
 187 28 29 2464 13 9
Row.cpp
in squangle/mysql_client
 242 18 83 2292 12 9
FutureAdapter.cpp
in squangle/mysql_client
 147 14 77 2292 12 10
QueryBenchmark.cpp
in squangle/mysql_client
 245 11 83 2195 11 10
ExceptionUtil.h
in squangle/base
 27 - 83 2116 8 5
SSLOptionsProviderBase.cpp
in squangle/mysql_client
 34 2 83 2019 8 5
ClientPool.h
in squangle/mysql_client
 66 7 83 2111 8 7
AsyncHelpers.cpp
in squangle/mysql_client
 30 2 83 2350 7 5
DBEventCounter.cpp
in squangle/logger
 75 5 29 2464 7 5
OperationBatch.cpp
in squangle/mysql_client
 44 4 83 2292 7 6
FutureAdapter.h
in squangle/mysql_client
 28 - 83 2292 7 6
ConnectionKey.h
in squangle/base
 43 1 83 2480 6 5
ConnectionKey.cpp
in squangle/base
 52 2 83 2016 6 5
AsyncHelpers.h
in squangle/mysql_client
 19 - 83 2292 6 5
OperationBatch.h
in squangle/mysql_client
 37 1 83 2612 5 5
MysqlClientBase.h
in squangle/mysql_client
 109 5 56 85 4 1
Compression.h
in squangle/mysql_client
 19 - 83 247 4 1
SyncMysqlClient.h
in squangle/mysql_client
 131 21 56 85 4 1
Compression.cpp
in squangle/mysql_client
 57 3 83 247 4 2
SyncMysqlClient.cpp
in squangle/mysql_client
 12 1 56 85 3 1
MysqlClientBase.cpp
in squangle/mysql_client
 91 6 56 85 3 1
MysqlConnectionHolder.cpp
in squangle/mysql_client
 55 2 76 85 3 2
MysqlConnectionHolder.h
in squangle/mysql_client
 98 12 76 85 3 2
Base.h
in squangle/base
 6 - 83 85 2 1
MysqlHandler.h
in squangle/mysql_client
 34 - 83 308 2 2
Correlations

File Size vs. Number of Changes: 41 points

squangle/mysql_client/Operation.cpp x: 1537 lines of code y: 120 # changes squangle/mysql_client/AsyncConnectionPool.h x: 574 lines of code y: 43 # changes squangle/logger/DBEventCounter.cpp x: 75 lines of code y: 7 # changes squangle/logger/DBEventCounter.h x: 187 lines of code y: 13 # changes squangle/mysql_client/Query.h x: 365 lines of code y: 32 # changes squangle/mysql_client/SSLOptionsProviderBase.h x: 27 lines of code y: 13 # changes squangle/mysql_client/AsyncConnectionPool.cpp x: 816 lines of code y: 53 # changes squangle/mysql_client/AsyncMysqlClient.cpp x: 252 lines of code y: 79 # changes squangle/mysql_client/MysqlClientBase.cpp x: 91 lines of code y: 3 # changes squangle/mysql_client/MysqlClientBase.h x: 109 lines of code y: 4 # changes squangle/mysql_client/SyncMysqlClient.cpp x: 12 lines of code y: 3 # changes squangle/mysql_client/SyncMysqlClient.h x: 131 lines of code y: 4 # changes squangle/mysql_client/Row.h x: 356 lines of code y: 28 # changes squangle/mysql_client/AsyncMysqlClient.h x: 260 lines of code y: 75 # changes squangle/mysql_client/Connection.cpp x: 364 lines of code y: 21 # changes squangle/mysql_client/Connection.h x: 425 lines of code y: 22 # changes squangle/mysql_client/MysqlConnectionHolder.cpp x: 55 lines of code y: 3 # changes squangle/mysql_client/MysqlConnectionHolder.h x: 98 lines of code y: 3 # changes squangle/mysql_client/Operation.h x: 988 lines of code y: 97 # changes squangle/mysql_client/FutureAdapter.cpp x: 147 lines of code y: 12 # changes squangle/base/Base.h x: 6 lines of code y: 2 # changes squangle/base/ConnectionKey.cpp x: 52 lines of code y: 6 # changes squangle/base/ConnectionKey.h x: 43 lines of code y: 6 # changes squangle/base/ExceptionUtil.h x: 27 lines of code y: 8 # changes squangle/logger/DBEventLogger.cpp x: 37 lines of code y: 19 # changes squangle/logger/DBEventLogger.h x: 182 lines of code y: 29 # changes squangle/mysql_client/AsyncHelpers.cpp x: 30 lines of code y: 7 # changes squangle/mysql_client/AsyncHelpers.h x: 19 lines of code y: 6 # changes squangle/mysql_client/ClientPool.h x: 66 lines of code y: 8 # changes squangle/mysql_client/Compression.cpp x: 57 lines of code y: 4 # changes squangle/mysql_client/Compression.h x: 19 lines of code y: 4 # changes squangle/mysql_client/DbResult.cpp x: 362 lines of code y: 28 # changes squangle/mysql_client/DbResult.h x: 438 lines of code y: 26 # changes squangle/mysql_client/MysqlHandler.h x: 34 lines of code y: 2 # changes squangle/mysql_client/OperationBatch.cpp x: 44 lines of code y: 7 # changes squangle/mysql_client/OperationBatch.h x: 37 lines of code y: 5 # changes squangle/mysql_client/Query.cpp x: 523 lines of code y: 25 # changes squangle/mysql_client/QueryBenchmark.cpp x: 245 lines of code y: 11 # changes squangle/mysql_client/Row.cpp x: 242 lines of code y: 12 # changes squangle/mysql_client/SSLOptionsProviderBase.cpp x: 34 lines of code y: 8 # changes
120.0
# changes
  min: 2.0
  average: 21.1
  25th percentile: 4.5
  median: 8.0
  75th percentile: 27.0
  max: 120.0
0 1537.0
lines of code
min: 6.0 | average: 229.12 | 25th percentile: 35.5 | median: 98.0 | 75th percentile: 359.0 | max: 1537.0

Number of Contributors vs. Number of Changes: 41 points

squangle/mysql_client/Operation.cpp x: 35 # contributors y: 120 # changes squangle/mysql_client/AsyncConnectionPool.h x: 22 # contributors y: 43 # changes squangle/logger/DBEventCounter.cpp x: 5 # contributors y: 7 # changes squangle/logger/DBEventCounter.h x: 9 # contributors y: 13 # changes squangle/mysql_client/Query.h x: 22 # contributors y: 32 # changes squangle/mysql_client/SSLOptionsProviderBase.h x: 7 # contributors y: 13 # changes squangle/mysql_client/AsyncConnectionPool.cpp x: 24 # contributors y: 53 # changes squangle/mysql_client/AsyncMysqlClient.cpp x: 31 # contributors y: 79 # changes squangle/mysql_client/MysqlClientBase.cpp x: 1 # contributors y: 3 # changes squangle/mysql_client/MysqlClientBase.h x: 1 # contributors y: 4 # changes squangle/mysql_client/Row.h x: 16 # contributors y: 28 # changes squangle/mysql_client/AsyncMysqlClient.h x: 28 # contributors y: 75 # changes squangle/mysql_client/Connection.cpp x: 11 # contributors y: 21 # changes squangle/mysql_client/Connection.h x: 11 # contributors y: 22 # changes squangle/mysql_client/MysqlConnectionHolder.cpp x: 2 # contributors y: 3 # changes squangle/mysql_client/Operation.h x: 26 # contributors y: 97 # changes squangle/mysql_client/FutureAdapter.cpp x: 10 # contributors y: 12 # changes squangle/base/Base.h x: 1 # contributors y: 2 # changes squangle/base/ConnectionKey.cpp x: 5 # contributors y: 6 # changes squangle/base/ExceptionUtil.h x: 5 # contributors y: 8 # changes squangle/logger/DBEventLogger.cpp x: 10 # contributors y: 19 # changes squangle/logger/DBEventLogger.h x: 12 # contributors y: 29 # changes squangle/mysql_client/ClientPool.h x: 7 # contributors y: 8 # changes squangle/mysql_client/Compression.cpp x: 2 # contributors y: 4 # changes squangle/mysql_client/DbResult.cpp x: 10 # contributors y: 28 # changes squangle/mysql_client/DbResult.h x: 13 # contributors y: 26 # changes squangle/mysql_client/FutureAdapter.h x: 6 # contributors y: 7 # changes squangle/mysql_client/MysqlHandler.h x: 2 # contributors y: 2 # changes squangle/mysql_client/OperationBatch.h x: 5 # contributors y: 5 # changes squangle/mysql_client/Query.cpp x: 19 # contributors y: 25 # changes squangle/mysql_client/QueryBenchmark.cpp x: 10 # contributors y: 11 # changes squangle/mysql_client/Row.cpp x: 9 # contributors y: 12 # changes
120.0
# changes
  min: 2.0
  average: 21.1
  25th percentile: 4.5
  median: 8.0
  75th percentile: 27.0
  max: 120.0
0 35.0
# contributors
min: 1.0 | average: 9.95 | 25th percentile: 3.5 | median: 7.0 | 75th percentile: 12.5 | max: 35.0