Keydb

Debian 9 (stretch) install

wget https://download.keydb.dev/keydb-stable.tar.gz
tar xzvf keydb-stable.tar.gz
cd KeyDB/
apt-get install build-essential nasm autotools-dev autoconf libjemalloc-dev tcl tcl-dev uuid-dev libcurl4-openssl-dev
make distclean
make && make install

Systemd service faila galima rasti cia, jį dedame į /etc/systemd/system/keydb.service Sukuriame failą /etc/keydb.conf ir sudedame keydb konfiguraciją kaip aprašyta žemiau:

bind 127.0.0.1
protected-mode yes
port 6379
tcp-backlog 65365
timeout 0
tcp-keepalive 0
daemonize yes
supervised no
pidfile /var/run/redis/keydb-server.pid
loglevel notice
logfile /var/log/redis/keydb.log
databases 16
always-show-logo yes
save 600 1000000
stop-writes-on-bgsave-error no
rdbcompression yes
rdbchecksum no
dbfilename dump.rdb
dir /var/lib/redis
replica-serve-stale-data yes
replica-read-only yes
repl-diskless-sync no
repl-diskless-sync-delay 5
repl-disable-tcp-nodelay no
replica-priority 100
lazyfree-lazy-eviction no
lazyfree-lazy-expire no
lazyfree-lazy-server-del no
replica-lazy-flush no
appendonly no
appendfilename "appendonly.aof"
appendfsync everysec
no-appendfsync-on-rewrite no
auto-aof-rewrite-percentage 100
auto-aof-rewrite-min-size 64mb
aof-load-truncated yes
aof-use-rdb-preamble yes
lua-time-limit 5000
slowlog-log-slower-than 10000
slowlog-max-len 128
latency-monitor-threshold 0
notify-keyspace-events ""
hash-max-ziplist-entries 512
hash-max-ziplist-value 64
list-max-ziplist-size -2
list-compress-depth 0
set-max-intset-entries 512
zset-max-ziplist-entries 128
zset-max-ziplist-value 64
hll-sparse-max-bytes 3000
stream-node-max-bytes 4096
stream-node-max-entries 100
activerehashing yes
client-output-buffer-limit normal 0 0 0
client-output-buffer-limit replica 256mb 64mb 60
client-output-buffer-limit pubsub 32mb 8mb 60
hz 10
dynamic-hz yes
aof-rewrite-incremental-fsync yes
rdb-save-incremental-fsync yes
server-threads 4

Prieš įgalindami keydb servisą, turime išjungti senajį redis serverį.

systemctl stop redis
systemctl disable redis

Įjungiame keydb

systemctl start keydb
systemctl enable keydb

Kernel tune

echo 'net.core.somaxconn=65365' >> /etc/sysctl.conf
echo 'vm.overcommit_memory = 1' >> /etc/sysctl.conf
sysctl -p
echo never > /sys/kernel/mm/transparent_hugepage/enabled

Experimental

vm.swappiness=0                       # turn off swapping
net.ipv4.tcp_sack=1                   # enable selective acknowledgements
net.ipv4.tcp_timestamps=1             # needed for selective acknowledgements
net.ipv4.tcp_window_scaling=1         # scale the network window
net.ipv4.tcp_congestion_control=cubic # better congestion algorythm
net.ipv4.tcp_syncookies=1             # enable syn cookied
net.ipv4.tcp_tw_recycle=1             # recycle sockets quickly