How to take a backup of database without language cache content

[krisp]

Language caches can make the database up to 50 times larger. There is no need to backup those caches since they are replaced every 14 days anyway. Here is how to backup the database where the cached tables are flushed (empty) in the backup (tested on Linux Centos): Batchjob: mysqldump -u username -ppassword databasename | python dump.py > dump.sql Where the following python script with the name dump.py is used:

#!/usr/bin/env python# -*- coding: UTF-8 -*-#import sys  line = sys.stdin.readline()ignore = Falsewhile line:if "LOCK TABLES" in line:l = line.replace("`", "")try:tname = l.split(" ")[2]sys.stderr.write(tname+"\n")if tname in ("vbenterprisetranslator_cache_medium_da",    "vbenterprisetranslator_cache_medium_ar",    "vbenterprisetranslator_cache_medium_be",    "vbenterprisetranslator_cache_medium_bg",    "vbenterprisetranslator_cache_medium_ca",    "vbenterprisetranslator_cache_medium_cs",    "vbenterprisetranslator_cache_medium_cy",    "vbenterprisetranslator_cache_medium_de",    "vbenterprisetranslator_cache_medium_el",    "vbenterprisetranslator_cache_medium_en",    "vbenterprisetranslator_cache_medium_es",    "vbenterprisetranslator_cache_medium_et",    "vbenterprisetranslator_cache_medium_fa",    "vbenterprisetranslator_cache_medium_fi",    "vbenterprisetranslator_cache_medium_fr",    "vbenterprisetranslator_cache_medium_ga",    "vbenterprisetranslator_cache_medium_gl",    "vbenterprisetranslator_cache_medium_hi",    "vbenterprisetranslator_cache_medium_hr",    "vbenterprisetranslator_cache_medium_hu",    "vbenterprisetranslator_cache_medium_id",    "vbenterprisetranslator_cache_medium_is",    "vbenterprisetranslator_cache_medium_it",    "vbenterprisetranslator_cache_medium_iw",    "vbenterprisetranslator_cache_medium_ja",    "vbenterprisetranslator_cache_medium_ko",    "vbenterprisetranslator_cache_medium_lt",    "vbenterprisetranslator_cache_medium_lv",    "vbenterprisetranslator_cache_medium_mk",    "vbenterprisetranslator_cache_medium_ms",    "vbenterprisetranslator_cache_medium_mt",    "vbenterprisetranslator_cache_medium_nl",    "vbenterprisetranslator_cache_medium_no",    "vbenterprisetranslator_cache_medium_pl",    "vbenterprisetranslator_cache_medium_pt",    "vbenterprisetranslator_cache_medium_ro",    "vbenterprisetranslator_cache_medium_ru",    "vbenterprisetranslator_cache_medium_sk",    "vbenterprisetranslator_cache_medium_sl",    "vbenterprisetranslator_cache_medium_sq",    "vbenterprisetranslator_cache_medium_sr",    "vbenterprisetranslator_cache_medium_sv",    "vbenterprisetranslator_cache_medium_sw",    "vbenterprisetranslator_cache_medium_th",    "vbenterprisetranslator_cache_medium_tl",    "vbenterprisetranslator_cache_medium_tr",    "vbenterprisetranslator_cache_medium_uk",    "vbenterprisetranslator_cache_medium_vi",    "vbenterprisetranslator_cache_medium_yi",    "vbenterprisetranslator_cache_medium_zh-CN",    "vbenterprisetranslator_cache_medium_zh-TW",    "vbenterprisetranslator_cache_da",    "vbenterprisetranslator_cache_ar",    "vbenterprisetranslator_cache_be",    "vbenterprisetranslator_cache_bg",    "vbenterprisetranslator_cache_ca",    "vbenterprisetranslator_cache_cs",    "vbenterprisetranslator_cache_cy",    "vbenterprisetranslator_cache_de",    "vbenterprisetranslator_cache_el",    "vbenterprisetranslator_cache_en",    "vbenterprisetranslator_cache_es",    "vbenterprisetranslator_cache_et",    "vbenterprisetranslator_cache_fa",    "vbenterprisetranslator_cache_fi",    "vbenterprisetranslator_cache_fr",    "vbenterprisetranslator_cache_ga",    "vbenterprisetranslator_cache_gl",    "vbenterprisetranslator_cache_hi",    "vbenterprisetranslator_cache_hr",    "vbenterprisetranslator_cache_hu",    "vbenterprisetranslator_cache_id",    "vbenterprisetranslator_cache_is",    "vbenterprisetranslator_cache_it",    "vbenterprisetranslator_cache_iw",    "vbenterprisetranslator_cache_ja",    "vbenterprisetranslator_cache_ko",    "vbenterprisetranslator_cache_lt",    "vbenterprisetranslator_cache_lv",    "vbenterprisetranslator_cache_mk",    "vbenterprisetranslator_cache_ms",    "vbenterprisetranslator_cache_mt",    "vbenterprisetranslator_cache_nl",    "vbenterprisetranslator_cache_no",    "vbenterprisetranslator_cache_pl",    "vbenterprisetranslator_cache_pt",    "vbenterprisetranslator_cache_ro",    "vbenterprisetranslator_cache_ru",    "vbenterprisetranslator_cache_sk",    "vbenterprisetranslator_cache_sl",    "vbenterprisetranslator_cache_sq",    "vbenterprisetranslator_cache_sr",    "vbenterprisetranslator_cache_sv",    "vbenterprisetranslator_cache_sw",    "vbenterprisetranslator_cache_th",    "vbenterprisetranslator_cache_tl",    "vbenterprisetranslator_cache_tr",    "vbenterprisetranslator_cache_uk",    "vbenterprisetranslator_cache_vi",    "vbenterprisetranslator_cache_yi",    "vbenterprisetranslator_cache_zh-CN",    "vbenterprisetranslator_cache_zh-TW",    "vbenterprisetranslator_cache_short_da",    "vbenterprisetranslator_cache_short_ar",    "vbenterprisetranslator_cache_short_be",    "vbenterprisetranslator_cache_short_bg",    "vbenterprisetranslator_cache_short_ca",    "vbenterprisetranslator_cache_short_cs",    "vbenterprisetranslator_cache_short_cy",    "vbenterprisetranslator_cache_short_de",    "vbenterprisetranslator_cache_short_el",    "vbenterprisetranslator_cache_short_en",    "vbenterprisetranslator_cache_short_es",    "vbenterprisetranslator_cache_short_et",    "vbenterprisetranslator_cache_short_fa",    "vbenterprisetranslator_cache_short_fi",    "vbenterprisetranslator_cache_short_fr",    "vbenterprisetranslator_cache_short_ga",    "vbenterprisetranslator_cache_short_gl",    "vbenterprisetranslator_cache_short_hi",    "vbenterprisetranslator_cache_short_hr",    "vbenterprisetranslator_cache_short_hu",    "vbenterprisetranslator_cache_short_id",    "vbenterprisetranslator_cache_short_is",    "vbenterprisetranslator_cache_short_it",    "vbenterprisetranslator_cache_short_iw",    "vbenterprisetranslator_cache_short_ja",    "vbenterprisetranslator_cache_short_ko",    "vbenterprisetranslator_cache_short_lt",    "vbenterprisetranslator_cache_short_lv",    "vbenterprisetranslator_cache_short_mk",    "vbenterprisetranslator_cache_short_ms",    "vbenterprisetranslator_cache_short_mt",    "vbenterprisetranslator_cache_short_nl",    "vbenterprisetranslator_cache_short_no",    "vbenterprisetranslator_cache_short_pl",    "vbenterprisetranslator_cache_short_pt",    "vbenterprisetranslator_cache_short_ro",    "vbenterprisetranslator_cache_short_ru",    "vbenterprisetranslator_cache_short_sk",    "vbenterprisetranslator_cache_short_sl",    "vbenterprisetranslator_cache_short_sq",    "vbenterprisetranslator_cache_short_sr",    "vbenterprisetranslator_cache_short_sv",    "vbenterprisetranslator_cache_short_sw",    "vbenterprisetranslator_cache_short_th",    "vbenterprisetranslator_cache_short_tl",    "vbenterprisetranslator_cache_short_tr",    "vbenterprisetranslator_cache_short_uk",    "vbenterprisetranslator_cache_short_vi",    "vbenterprisetranslator_cache_short_yi",    "vbenterprisetranslator_cache_short_zh-CN",    "vbenterprisetranslator_cache_short_zh-TW"):ignore = Trueexcept IndexError:sys.stderr.write(l)passif ignore and "INSERT" in line:line = sys.stdin.readline()continueif "UNLOCK TABLES" in line:ignore = False sys.stdout.write(line)line = sys.stdin.readline()

Remember to run: chmod +x /root/dump.py from root (one time only before running batch job the first time)