• File size measurements show the distribution of size of files.
• Files are classified in four categories based on their size (lines of code): 1-100 (very small files), 101-200 (small files), 201-500 (medium size files), 501-1000 (long files), 1001+(very long files).
• It is a good practice to keep files small. Long files may become "bloaters", code that have increased to such gargantuan proportions that they are hard to work with.

• There are 629 files with 154,228 lines of code.
• 27 very long files (45,765 lines of code)
• 64 long files (44,008 lines of code)
• 114 medium size files (35,863 lines of codeclsfd_ftr_w_mp_ins)
• 109 small files (15,759 lines of code)
• 315 very small files (12,833 lines of code)

There are 21 files with lines longer than 120 characters. In total, there are 145 long lines.

File	# lines	# units	# long lines
couch_mrview_debug.erl in src/couch_mrview/src	497	-	56
xxhash.h in src/exxhash/c_src	3371	69	21
couch_util.erl in src/couch/src	788	-	17
quickjs.h in src/couch_quickjs/quickjs	872	37	11
fabric_bench.erl in src/fabric/src	327	-	8
couch_debug.erl in src/couch/src	1055	-	8
configure.ps1 in root	344	-	6
in couchdb.cmd.in in rel/files	29	-	3
in couchdb.in in rel/files	34	-	2
dtoa.c in src/couch_quickjs/quickjs	1360	44	2
dreyfus_httpd.erl in src/dreyfus/src	687	-	1
mango_cursor_view.erl in src/mango/src	1962	-	1
mango_cursor.erl in src/mango/src	1236	-	1
couch_httpd.erl in src/couch/src	1374	-	1
libunicode.c in src/couch_quickjs/quickjs	1660	44	1
quickjs-libc.c in src/couch_quickjs/quickjs	3584	137	1
chttpd_misc.erl in src/chttpd/src	292	-	1
chttpd_util.erl in src/chttpd/src	166	-	1
chttpd_auth_cache.erl in src/chttpd/src	237	-	1
chttpd_db.erl in src/chttpd/src	2619	-	1
UserAgentFilter.java in nouveau/src/main/java/org/apache/couchdb/nouveau/core	30	1	1