Duplication · Netflix/servo

Duplication Overall

4% duplication:

6,689 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
313 duplicated lines

58 duplicates

dependency graphs: 2D graph | 2D graph (with duplicates)... | 3D graph | 3D graph (with duplicates)...

Duplication per Extension

Duplication per Component (primary)

Longest Duplicates

The list of 50 longest duplicates.

See data for all 58 duplicates...

Size	#	Folders	Files	Lines	Code
11	x 2	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor	BasicTimer.java BucketTimer.java	90:110 (11%) 158:178 (8%)	view
11	x 2	servo-aws/src/main/java/com/netflix/servo/tag/aws servo-core/src/main/java/com/netflix/servo/tag	AwsInjectableTag.java InjectableTag.java	68:90 (14%) 42:67 (40%)	view
11	x 2	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor	DoubleGauge.java LongGauge.java	58:80 (27%) 59:81 (28%)	view
9	x 2	servo-core/src/main/java/com/netflix/servo/publish servo-core/src/main/java/com/netflix/servo/publish	PrefixMetricFilter.java RegexMetricFilter.java	57:65 (27%) 56:64 (33%)	view
9	x 2	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor	DoubleMaxGauge.java MaxGauge.java	115:133 (18%) 114:132 (18%)	view
9	x 2	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor	BucketTimer.java StatsTimer.java	166:184 (6%) 76:94 (21%)	view
8	x 2	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor	MaxGauge.java MinGauge.java	114:131 (16%) 97:114 (19%)	view
8	x 2	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor	AnnotatedNumberMonitor.java AnnotatedStringMonitor.java	81:98 (20%) 66:80 (24%)	view
8	x 2	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor	DoubleMaxGauge.java MinGauge.java	115:132 (16%) 97:114 (19%)	view
8	x 2	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor	DoubleMaxGauge.java MaxGauge.java	97:109 (16%) 96:108 (16%)	view
8	x 2	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor	BasicTimer.java StatsTimer.java	98:110 (8%) 76:88 (19%)	view
7	x 2	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor	StatsMonitor.java StatsMonitor.java	114:122 (2%) 149:157 (2%)	view
7	x 2	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor	DoubleMaxGauge.java NumberGauge.java	121:132 (14%) 96:107 (17%)	view
7	x 2	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor	DynamicCounter.java DynamicTimer.java	48:54 (11%) 84:90 (8%)	view
7	x 2	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor	MaxGauge.java NumberGauge.java	120:131 (14%) 96:107 (17%)	view
7	x 2	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor	MinGauge.java NumberGauge.java	103:114 (17%) 96:107 (17%)	view
6	x 2	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor	StatsMonitor.java StatsMonitor.java	128:137 (2%) 163:172 (2%)	view
6	x 2	servo-graphite/src/main/.../servo/publish/graphite servo-graphite/src/main/.../servo/publish/graphite	BasicGraphiteNamingConvention.java BasicGraphiteNamingConvention.java	52:59 (11%) 78:85 (11%)	view
6	x 2	servo-core/src/main/java/com/netflix/servo servo-core/src/main/java/com/netflix/servo	SpectatorContext.java SpectatorContext.java	295:304 (2%) 336:345 (2%)	view
6	x 2	servo-core/src/main/java/com/netflix/servo servo-core/src/main/java/com/netflix/servo	SpectatorContext.java SpectatorContext.java	295:304 (2%) 388:397 (2%)	view
6	x 2	servo-core/src/main/java/com/netflix/servo servo-core/src/main/java/com/netflix/servo	SpectatorContext.java SpectatorContext.java	295:304 (2%) 442:451 (2%)	view
6	x 2	servo-core/src/main/java/com/netflix/servo servo-core/src/main/java/com/netflix/servo	SpectatorContext.java SpectatorContext.java	336:345 (2%) 388:397 (2%)	view
6	x 2	servo-core/src/main/java/com/netflix/servo servo-core/src/main/java/com/netflix/servo	SpectatorContext.java SpectatorContext.java	336:345 (2%) 442:451 (2%)	view
6	x 2	servo-core/src/main/java/com/netflix/servo servo-core/src/main/java/com/netflix/servo	SpectatorContext.java SpectatorContext.java	388:397 (2%) 442:451 (2%)	view
6	x 2	servo-core/src/main/java...tflix/servo/annotations servo-core/src/main/java...tflix/servo/annotations	DataSourceLevel.java DataSourceType.java	48:63 (54%) 67:82 (46%)	view
6	x 2	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/util	DoubleCounter.java ManualClock.java	108:114 (11%) 55:61 (31%)	view
6	x 2	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/util	DurationTimer.java ExpiringCache.java	121:127 (6%) 57:63 (8%)	view
6	x 2	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/util	StepCounter.java ExpiringCache.java	122:128 (12%) 57:63 (8%)	view
6	x 2	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor	DurationTimer.java StepCounter.java	121:127 (6%) 122:128 (12%)	view
6	x 2	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor	DynamicTimer.java LongGauge.java	61:68 (6%) 74:81 (15%)	view
6	x 2	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor	DoubleGauge.java DynamicTimer.java	73:80 (15%) 61:68 (6%)	view
6	x 2	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor	LongGauge.java NumberGauge.java	91:101 (15%) 96:106 (14%)	view
6	x 2	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor	BucketTimer.java StatsMonitor.java	146:152 (4%) 375:381 (2%)	view
6	x 2	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor	DoubleMaxGauge.java LongGauge.java	121:131 (12%) 91:101 (15%)	view
6	x 2	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/util	StepCounter.java ManualClock.java	122:128 (12%) 55:61 (31%)	view
6	x 2	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor	LongGauge.java MaxGauge.java	91:101 (15%) 120:130 (12%)	view
6	x 2	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor	DoubleCounter.java StepCounter.java	94:101 (11%) 105:115 (12%)	view
6	x 2	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor	DoubleCounter.java StepCounter.java	108:114 (11%) 122:128 (12%)	view
6	x 2	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor	LongGauge.java MinGauge.java	91:101 (15%) 103:113 (14%)	view
6	x 2	servo-core/src/main/java/com/netflix/servo/util servo-core/src/main/java/com/netflix/servo/util	ExpiringCache.java ManualClock.java	57:63 (8%) 55:61 (31%)	view
6	x 2	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor	DoubleCounter.java DurationTimer.java	108:114 (11%) 121:127 (6%)	view
6	x 2	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/util	DurationTimer.java ManualClock.java	121:127 (6%) 55:61 (31%)	view
6	x 2	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/util	DoubleCounter.java ExpiringCache.java	108:114 (11%) 57:63 (8%)	view
6	x 2	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor	DynamicTimer.java StepCounter.java	61:68 (6%) 122:128 (12%)	view
6	x 2	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor	DurationTimer.java DynamicTimer.java	121:127 (6%) 61:68 (6%)	view
6	x 2	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/util	DynamicTimer.java ExpiringCache.java	61:68 (6%) 57:63 (8%)	view
6	x 2	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor	DoubleGauge.java DurationTimer.java	73:80 (15%) 121:127 (6%)	view
6	x 2	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor	LongGauge.java StepCounter.java	74:81 (15%) 122:128 (12%)	view
6	x 2	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/util	DoubleGauge.java ExpiringCache.java	73:80 (15%) 57:63 (8%)	view
6	x 2	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/util	LongGauge.java ExpiringCache.java	74:81 (15%) 57:63 (8%)	view

Most Frequent Duplicates

The list of 8 most frequently found duplicates.

Size	#	Folders	Files	Lines	Code
6	x 8	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/util servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/util servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor	DoubleGauge.java DynamicTimer.java ManualClock.java DoubleCounter.java ExpiringCache.java LongGauge.java DurationTimer.java StepCounter.java	73:80 (15%) 61:68 (6%) 55:61 (31%) 108:114 (11%) 57:63 (8%) 74:81 (15%) 121:127 (6%) 122:128 (12%)	view
6	x 5	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor	LongGauge.java MinGauge.java MaxGauge.java NumberGauge.java DoubleMaxGauge.java	91:101 (15%) 103:113 (14%) 120:130 (12%) 96:106 (14%) 121:131 (12%)	view
6	x 4	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor	MaxGauge.java MinGauge.java NumberGauge.java DoubleMaxGauge.java	121:131 (12%) 104:114 (14%) 97:107 (14%) 122:132 (12%)	view
6	x 4	servo-core/src/main/java/com/netflix/servo servo-core/src/main/java/com/netflix/servo servo-core/src/main/java/com/netflix/servo servo-core/src/main/java/com/netflix/servo	SpectatorContext.java SpectatorContext.java SpectatorContext.java SpectatorContext.java	295:304 (2%) 336:345 (2%) 388:397 (2%) 442:451 (2%)	view
6	x 3	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor	BasicTimer.java BucketTimer.java StatsTimer.java	100:110 (6%) 168:178 (4%) 78:88 (14%)	view
6	x 3	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor	MaxGauge.java MinGauge.java DoubleMaxGauge.java	114:124 (12%) 97:107 (14%) 115:125 (12%)	view
6	x 3	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor	BasicTimer.java BucketTimer.java StatsTimer.java	98:108 (6%) 166:176 (4%) 76:86 (14%)	view
6	x 3	servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor servo-core/src/main/java/com/netflix/servo/monitor	BasicTimer.java BucketTimer.java StatsTimer.java	99:109 (6%) 167:177 (4%) 77:87 (14%)	view

About This Analysis

For duplication, we look at places in code where there are 6 or more lines of code that are exactly the same.
Before duplication is calculated, the code is cleaned to remove empty lines, comments, and frequently duplicated constructs such as imports.
You should aim at having as little as possible (<5%) of duplicated code as high-level of duplication can lead to maintenance difficulties, poor factoring, and logical contradictions.

Learn more...

To learn more about duplications and techniques for eliminating duplication, Sokrates recommends the following resources:

Avoid Repetition, MartinFlower.com (IEEE Software article)
Refactoring duplicated code, sourcemaking.com
Beck Design Rules, MartinFowler.com
DRY (Don't Repeat Yourself) Principle, Wikipedia
The Cut-and-Paste Programming Software Development Anti-Pattern, sourcemaking.com
Code Smells / Duplicated Code, Jeff Atwood, codinghorror.com:

"Duplicated code is the bane of software development. Stamp out duplication whenever possible. You should always be on the lookout for more subtle cases of near-duplication, too. Don't Repeat Yourself!"

Reducing Coupling, MartinFlower.com (IEEE Software article):

"There are several ways to describe coupling, but it boils down to this: If changing one module in a program requires changing another module, then coupling exists. ... Duplication always implies coupling, because changing one piece of duplicate code implies changing the other."