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dcarley /
Created Jul 28, 2020
samproxy CacheCapacity tuning notes

I was originally hoping to calculate the appropriate CacheCapacity from metrics at 10% traffic and then scale up from there, however it proved harder than I thought.

We have the following variables that we can tweak:

  • cache per pod: needs to be large enough that we can take spikes in trace volume or duration but not too large that we're wasting memory

  • memory per pod: should be less than 8G so that we can effectively fit


Keybase proof

I hereby claim:

  • I am dcarley on github.
  • I am dcarley ( on keybase.
  • I have a public key whose fingerprint is 7F55 81C1 1A96 119A 6903 7518 4AAC F5A2 32BB 356A

To claim this, I am signing this object:

View gist:6cee02b19c862ea8cb06fbdc9b0f1346
dcarley@cci-mbp  ~  xxd -c1
00000000: 43 C
00000001: 49 I
00000002: 52 R
00000003: 43 C
00000004: 4c L
00000005: 45 E
00000006: e2 .
00000007: 80 .
dcarley / apps.go
Last active May 4, 2018
CF apps inspection script
View apps.go
package main
import (
cfclient ""
dcarley / tf_trace.log
Created Jan 9, 2018
Terraform TF_PLUGIN_CACHE_DIR issue
View tf_trace.log
➜ terraform git:(a42fdb08a) ✗ TF_LOG=trace terraform init
2018/01/09 12:31:46 [INFO] Terraform version: 0.11.1
2018/01/09 12:31:46 [INFO] Go runtime version: go1.9.2
2018/01/09 12:31:46 [INFO] CLI args: []string{"/usr/local/Cellar/terraform/0.11.1/bin/terraform", "init"}
2018/01/09 12:31:46 [DEBUG] Attempting to open CLI config file: /Users/dcarley/.terraformrc
2018/01/09 12:31:46 [DEBUG] File doesn't exist, but doesn't need to. Ignoring.
2018/01/09 12:31:46 [INFO] CLI command args: []string{"init"}
2018/01/09 12:31:46 [DEBUG] command: loading backend config file: /Users/dcarley/projects/gocode/src/
2018/01/09 12:31:46 [INFO] command: empty terraform config, returning nil
2018/01/09 12:31:46 [DEBUG] command: no data state file found for backend config
View gist:5487768
location /api/json {
proxy_pass http://localhost:8080;
add_header "Access-Control-Allow-Origin" "*";
add_header "Access-Control-Allow-Methods" "GET, POST, OPTIONS";
add_header "Access-Control-Allow-Headers" "origin, authorization, cookie, accept";
add_header "Access-Control-Allow-Credentials" "true";
dcarley / vpnc-script-aws
Created Nov 8, 2017 — forked from alext/vpnc-script-aws
vpnc script to route all AWS IP ranges over VPN.
View vpnc-script-aws
# vpnc-script wrapper for use with openconnect that routes all AWS IP ranges over the VPN.
# Pass any additional IP ranges to be routed as args to the script.
# Requirements: bash, curl and jq.
# Example usage:
# openconnect --script '/path/to/vpnc-script-aws' --no-dtls
#!/usr/bin/env python
Test the probabilty of a URL being vulnerable to CVE-2011-3192
Both this test and real PoC are largely dependent on the content being
served. Dynamic content rendered by mod_php and mod_wsgi is unlikely to be
affected, whereas static or proxied content from the same VirtualHost or
Apache instance may still be vulnerable. For this reason it is worth testing
dcarley / order.csv
Created May 23, 2017
Farnell order for Boldport "just less than perfect" bundle
View order.csv
We can make this file beautiful and searchable if this error is corrected: Unclosed quoted field in line 5.
Order Code,Line Note,Description,Manufacturer,Manufacturer Part Number,Quantity,Unit Price,Line Total
2396052,cuttle,"SWITCH, TACTILE, 50MA, 24VDC, THT; Illumination:Non Illuminated; Contact Voltage DC Nom:24V; Contact Current Max:50mA; Operating Force:160gf; Switch Terminals:Through Hole; Product Range:FSMJRT Series; SVHC:No SVHC (12-J ",TE CONNECTIVITY / ALCOSWITCH,FSM4JRT,1,GBP 0.11,GBP 0.11
1972087,cuttle,"MCU, 8BIT, ATMEGA, 20MHZ, DIP-28; Controller Family/Series:ATmega; CPU Speed:20MHz; Program Memory Size:32KB; RAM Memory Size:2KB; No. of Pins:28Pins; MCU Case Style:DIP; No. of I/O's:23I/O's; Embedded Interface Type:I2C ",MICROCHIP,ATMEGA328-PU,1,GBP 2.36,GBP 2.36
2112751,cuttle,"CAP, MLCC, Y5V, 100NF, 50V, RAD; Capacitance:0.1µF; Voltage Rating:50V; Product Range:MC Series; Capacitance Tolerance:± 20%; Capacitor Terminals:Radial Leaded; Dielectric Characteristic:Y5V; Packaging:Cut Tape; Lead Spa ",MULTICOMP,MC0805Y104M500A2.54MM,4,GBP 0.0875,GBP 0.35
9339060,cuttle + pease,"RESISTOR, CARBON FILM, 10K,
View grafana.vhost.conf
server {
server_name grafana.*;
root /usr/share/grafana;
access_log /var/log/nginx/grafana-access.log timed_combined;
access_log /var/log/nginx/grafana-json.event.access.log json_event;
error_log /var/log/nginx/grafana-error.log;
location =/config.js {
alias /etc/grafana/config.js;
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