Using Software Modules - Welcome to Hell!

Using software modules today is the default way of working for most systems and frameworks. With the advent of many software languages and OSS frameworks, new module systems are constantly created and new module ecosystems start to prevail. This trend is horizontal and covers operating system packages, language libraries and application modules (plugins). But while some module systems are nicer to use, others are repeating past mistakes and are a daily source for developer agony and pain.

In this short talk I will present the "lessons learned" at JFrog, where we make software for managing software libraries and deal with many types of module systems. This talk will show what works and what doesn't work in a module system; what features can make a module ecosystem thrive or fail; and why, despite all downsides, modules are here to stay and conquer more space as the Cloud continues to grow.

Transcript

3.   
13. , IPS
23. DRAGON STORIES AHEAD! fAC Ddb
24. STORY NUMBER ONE f
25. , A STORY OF INDEXES +
26. , A STORY OF INDEXES + < KEPT IN WRONG PLACE >
27. Once Upon A Time…
28. Once Upon A Time… Can’t serve… searches…
29. Not anymore…
30. Look ma, no index download!
34. Have to download huge files Before Searching
35. Have to download huge files Before Searching Updated rarely
36. Have to download huge files Before Searching Updated rarely Requires special client
37. Have to download huge files Before Searching Updated rarely Requires special client
42. Lesson learned
43. STORY NUMBER TWO A
55. STORY NUMBER TWO (AND A HALF) AA
57. Lesson learned
65. STORY NUMBER THREE C
69. Depending on name only
70. Depending on name only
71. You knew it is coming!
83. A v1
84. A v1 E v1
85. A v1 E v1 D v1
86. A v1 B v1 E v1 D v1
87. A v1 C v1 B v1 E v1 D v1
88. A v1 C v1 B v1 D v2 E v1 D v1
89. A v1 C v1 B v1 D v2 E v1 D v1
94. Reprise…
100. Lesson learned
101. STORY NUMBER FOUR
106. Lesson learned
107. STORY NUMBER FIVE D
108. Like vodka and beer…
109. …Config. and Metadata …
110. …Just won’t mix.
114. My Project ‘A1’
115. My Project ‘A1’ <alwaysUse> <repository>MyRepo</repository> </alwaysUse> MyRepo
116. My Project ‘A1’ <dependency>B1</dependency> <alwaysUse> <repository>MyRepo</repository> </alwaysUse> MyRepo
117. My Project ‘A1’ <dependency>B1</dependency> <alwaysUse> <repository>MyRepo</repository> </alwaysUse> MyRepo Project ‘B1’
118. My Project ‘A1’ <dependency>B1</dependency> <alwaysUse> <repository>MyRepo</repository> </alwaysUse> MyRepo Project ‘B1’ BadRepo <repository>BadRepo</repository> <dependency>C1</dependency> 
119. My Project ‘A1’ <dependency>B1</dependency> <dependency>C1</dependency> <repository>MyRepo</repository> <repository>BadRepo</repository> MyRepo Project ‘B1’ BadRepo
120. My Project ‘A1’ <dependency>B1</dependency> <dependency>C1</dependency> <repository>MyRepo</repository> <repository>BadRepo</repository> MyRepo Project ‘B1’ BadRepo
122. Lesson learned
123. STORY NUMBER SIX
130. Wouldn’t it be dreamy if there was a way to express version compatibility matrix?
137. Lesson learned
138. NO MORE STORIES, ONE MORE THING OOO fAC Ddb