ericxyan

TICK Stack

Solution for collecting, storing, visualizing and alerting on time-series data at scale. All components of the platform are designed to work together seamlessly.

• Telegraf: Collects time-series data from a variety of sources
• InfluxDB:
• Chronograf: Visualizes and graphs
• Kapacitor: Alerting, ETL and detects anomalies in time-series data

Why Influx?

• Open Source - MIT
• Integrated - Data collection, storage, visualization and alerting

ericxyan

Commands

• Count lines in a file

wc -l <filename>

• copy public key to remote server

# Generate a key pair
ssh-keygen
# Copy key to remote server

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Time Series Data

What is Time series data?

What is TSDB(Time Series Database)?

TSDB

• InfluxDB
• OpenTSDB
• KDB+
• Graphite
• Riak TS

ericxyan

My Java study notes.

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My Python study notes.

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My Javascript study notes.

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import httplib2 as http
import json

try:
    from urlparse import urlparse
except ImportError:
    from urllib.parse import urlparse

headers = {
    'Accept': 'application/json',

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import cv2
import numpy as np
from matplotlib import pyplot as plt
# show gray image
plt.imshow(img, cmap=plt.get_cmap('gray'))

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import cv2
import numpy as np
import matplotlib.pyplot as plt
# show diff
# Approach 0
img = cv2.imread('messi4.jpg')
b,g,r = cv2.split(img)
img2 = cv2.merge([r,g,b])
plt.subplot(121);plt.imshow(img) # expects distorted color
plt.subplot(122);plt.imshow(img2) # expect true color

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