Awesome Jekyll

Status : Draft

Landing Page Themes

1. Landing Page Jekyll theme, http://shaneweng.com/landing-page-theme/

Themes for Labs

1. Allan Lab website, https://github.com/allanlab/allanlab

Optimalisasi

1. Optimizing images for web with Google Page Speed and jpegoptim, https://jmperezperez.com/jpegoptim-optimize-jpg-page-speed/
2. Trimage image compressor, https://trimage.org/

Contoh Peluang Pekerjaan Freelance yang menggunakan Jekyll 

1. https://www.upwork.com/o/jobs/browse/skill/jekyll/?sort=renew_time_int%2Bdesc

Bersahabat dengan Emacs

Status : Draft

Referensi

1. spacemacs, A community-driven Emacs distribution
2. awesome-emacs, A community driven list of useful Emacs packages, libraries and others., https://github.com/emacs-tw/awesome-emacs

Bersahabat dengan regex

Status : Draft

Referensi

1. Regular-Expressions.info, The Premier website about Regular Expressions, http://www.regular-expressions.info/
2. iHateRegex, https://ihateregex.io/

Berkenalan dengan Redis

Pertanyaan : 

1. Ketika menginstall redis, ada opsi apakah ingin mengaktifkan igbinary serializer support,   lzf compression support dan zstd compression support. Apa kekurangan dan kelebihan mengaktifkan ini ?

Redis di Google Cloud

[4]

redis-benchmark 

redis-benchmark -q -h 10.146.0.5 -p 6379 -c 100 -n 1000000 -k 1 -t set,get,mset,incr,lpush,lpop,sadd,spop,lpush,lrange

Hasil benchmark di MacBook Pro 2018 :

SET: 132240.16 requests per second

GET: 131700.25 requests per second

INCR: 134174.16 requests per second

LPUSH: 134898.16 requests per second

LPOP: 130958.62 requests per second

SADD: 129988.30 requests per second

SPOP: 126246.69 requests per second

LPUSH (needed to benchmark LRANGE): 127258.85 requests per second

LRANGE_100 (first 100 elements): 29457.69 requests per second

LRANGE_300 (first 300 elements): 12210.91 requests per second

LRANGE_500 (first 450 elements): 8519.19 requests per second

LRANGE_600 (first 600 elements): 6515.55 requests per second

MSET (10 keys): 91424.39 requests per second

Hasil benchmark di Google Compute : 

lpush,lpop,sadd,spop,lpush,lrange

SET: 50707.37 requests per second

GET: 50456.63 requests per second

INCR: 50334.72 requests per second

LPUSH: 48775.73 requests per second

LPOP: 49905.18 requests per second

SADD: 50890.59 requests per second

SPOP: 52069.77 requests per second

LPUSH (needed to benchmark LRANGE): 49766.10 requests per second

LRANGE_100 (first 100 elements): 26313.02 requests per second

LRANGE_300 (first 300 elements): 12700.67 requests per second

LRANGE_500 (first 450 elements): 9121.51 requests per second

LRANGE_600 (first 600 elements): 7058.56 requests per second

MSET (10 keys): 39756.69 requests per second

memtier_benchmark

$memtier_benchmark --server=127.0.0.1 --port=6379 --protocol=redis --threads=2 --test-time=120 --ratio=1:1 --clients=600 --data-size=100 --key-pattern=S:S --pipeline=50 --hdr-file-prefix=macbookpro2018

MacBook Pro 2018

Google Compute VM

GCP Memorystore

Latency Spectrum Redis MacBook Pro 2018 vs Google Compute vs GCP Memorystore

Mac Hardware Profile

$ system_profiler SPHardwareDataType

Hardware:

    Hardware Overview:

      Model Name: MacBook Pro

      Model Identifier: MacBookPro15,1

      Processor Name: Intel Core i7

      Processor Speed: 2.6 GHz

      Number of Processors: 1

      Total Number of Cores: 6

      L2 Cache (per Core): 256 KB

      L3 Cache: 9 MB

      Hyper-Threading Technology: Enabled

      Memory: 16 GB

      Boot ROM Version: 1554.60.15.0.0 (iBridge: 18.16.13030.0.0,0)

      Serial Number (system): C02XH8WHJG5J

      Hardware UUID: 21DEED7D-EEA5-53BC-882C-4B073F2C7854

GCP Hardware Profile

e2-standard-2 (2 vCPUs, 8 GB memory)

$ sudo lshw -short

H/W path            Device      Class          Description

==========================================================

                                system         Google Compute Engine

/0                              bus            Google Compute Engine

/0/0                            memory         96KiB BIOS

/0/1001                         processor      Intel(R) Xeon(R) CPU @ 2.00GHz

/0/1002                         processor      CPU

/0/200                          memory         8GiB System Memory

/0/200/0                        memory         8GiB DIMM RAM Synchronous

/0/100                          bridge         440FX - 82441FX PMC [Natoma]

/0/100/1                        bridge         82371AB/EB/MB PIIX4 ISA

/0/100/1.3                      bridge         82371AB/EB/MB PIIX4 ACPI

/0/100/3                        generic        Virtio SCSI

/0/100/3/0          scsi0       generic        Virtual I/O device

/0/100/3/0/0.1.0    /dev/sda    disk           53GB PersistentDisk

/0/100/3/0/0.1.0/1  /dev/sda1   volume         49GiB EXT4 volume

/0/100/3/0/0.1.0/e  /dev/sda14  volume         3071KiB BIOS Boot partition

/0/100/3/0/0.1.0/f              volume         123MiB Windows FAT volume

/0/100/4                        network        Virtio network device

/0/100/4/0          ens4        network        Ethernet interface

/0/100/5                        generic        Virtio memory balloon

/0/100/5/0                      generic        Virtual I/O device

/0/100/6                        generic        Virtio RNG

/0/100/6/0                      generic        Virtual I/O device

/0/1                            system         PnP device PNP0b00

/0/2                            input          PnP device PNP0303

/0/3                            input          PnP device PNP0f13

/0/4                            communication  PnP device PNP0501

/0/5                            communication  PnP device PNP0501

/0/6                            communication  PnP device PNP0501

/0/7                            communication  PnP device PNP0501

Redis GUI

RDM

Untuk Mac, bisa melakukan kompilasi sendiri, sangat mudah jika mengikuti dokumentasi yg ada.

Monitoring Redis dengan  Grafana Dashboard

[7]

/etc/systemd/system/redis_exporter.service

[Unit]

Description=Redis Exporter

Wants=network-online.target

After=network-online.target

[Service]

User=redis_exporter

Group=redis_exporter

Type=simple

ExecStart=/usr/local/bin/redis_exporter

[Install]

WantedBy=multi-user.target

sudo systemctl daemon-reload
sudo systemctl start redis_exporter
sudo systemctl status redis_exporter

Redis Tuning

disable transparent huge

echo never > /sys/kernel/mm/transparent_hugepage/enabled

Enabling overcommit_memory

$ echo 1 > /proc/sys/vm/overcommit_memory 

## Set it persistently 

$ echo 'vm.overcommit_memory = 1' >> /etc/sysctl.conf

Set swappiness at the most least weight

$ echo 1 > /proc/sys/vm/swappiness 

## Set it persistently 

$ echo 'vm.swappiness = 1' >> /etc/sysctl.conf

Memory Usage

nano /etc/redis/redis.conf
# Setting it to 8GB
maxmemory 6442450944

TCP-KeepAlive

## Editing default config file /etc/redis/redis.conf
# Update the value to 0
tcp-keepalive 0

Referensi

1. Redis, https://redis.io/
2. RDM, https://rdm.dev/
3. RedisInsight, https://redislabs.com/redis-enterprise/redis-insight/
4. Running Redis on GCP: four deployment scenarios, https://cloud.google.com/blog/products/databases/running-redis-on-gcp-four-deployment-scenarios
5. memtier_benchmark, https://github.com/RedisLabs/memtier_benchmark
6. Memtier-Benchmark Director, https://github.com/RedisLabs/mbdirector
7. redis_exporter, https://github.com/oliver006/redis_exporter 
8. Performance Tuning for Redis, https://severalnines.com/blog/performance-tuning-redis/
   

Berkenalan dengan SSDB : A high performance NoSQL database supporting many data structures, an alternative to Redis.

Status : Draft

Referensi

1. SSDB, A high performance NoSQL database supporting many data structures, an alternative to Redis., http://ssdb.io/