z5ottu

Hydrate ETS from DETS using an init GenServer

Mix.install([
  {:kino, "~> 0.6.2"},
  {:telemetry, "~> 1.2.1"}
])

This is a free sample from the Elixir Patterns book

z5ottu

From http://www.darkcoding.net/software/memcached-list-all-keys/

Telnet into memcached

telnet 127.0.0.1 11211

List items

stats items

STAT items:3:number 1

z5ottu

Script

set your locale:

add these lines to /etc/environment

LANG=en_US.utf-8
LC_ALL=en_US.utf-8

z5ottu

include <BLEDevice.h>
#include <BLEUtils.h>
#include <BLEServer.h>
#include "BLE2902.h"
#include "BLEHIDDevice.h"
#include "HIDTypes.h"
#include "HIDKeyboardTypes.h"
#include <driver/adc.h>

BLEHIDDevice* hid;

z5ottu

% Update Counter
increment
decrement
{increment, 4}
{decrement, 9}
% Update Set
{add, <<"Value">>}
{add_all, [<<"Value">>]}
{remove, <<"Value">>}
{remove_all, <<"Value">>}

z5ottu

%% -------------------------------------------------------------------
%%
%% riak_csv_etl: etl tools for csv files in Riak
%%
%% Copyright (c) 2011 Bradley Taylor.  All Rights Reserved.
%%
%% This file is provided to you under the Apache License,
%% Version 2.0 (the "License"); you may not use this file
%% except in compliance with the License.  You may obtain
%% a copy of the License at

z5ottu

#!/usr/bin/env escript
%% -*- erlang -*-

-include_lib("kernel/include/file.hrl").
-compile(export_all).
-define(LOG(S), io:format(S)).
-define(LOG(S,A), io:format(S,A)).

main(Dirs) ->
    CodePath = case os:getenv("RIAK_LIB") of

z5ottu

handle_call({lookup_popular_replies, TweetId, AuthorId}, _From, #state{client=Client} = State) ->
  % reduce fun to get valid tweet keys in tweet response bucket phase 3
  Fun = make_local_fun("fun(O, _) -> 
    lists:foldl(fun
      ([LinkedTweet = <<Id:128>>, <<Val:128>>, <<\"reply\">>], Acc) ->
        [{{<<\"tweet_responses_bucket\">>, LinkedTweet}, {Id, Val}} | Acc];
      ({{<<\"tweet_responses_bucket\">>, _}, _} = PreviousPass, Acc) ->
        [PreviousPass | Acc];
      (_, Acc) ->
        Acc

z5ottu

#!/bin/bash
# ERL_BIN, RIAK_LIB, and BUCKET_LIB can be defaulted here or set
#  in the environment 
#
# Path to the erl binary provided by Riak
ERL_BIN=${ERL_BIN:-"/usr/lib64/riak/erts-5.8.4/bin/erl"}

# Path to riak libraries
RIAK_LIB=${ERL_BIN:-"/usr/lib64/riak/lib"}

z5ottu

%% -------------------------------------------------------------------
%%
%% riak_kv_vnode: VNode Implementation
%%
%% Copyright (c) 2007-2010 Basho Technologies, Inc.  All Rights Reserved.
%%
%% This file is provided to you under the Apache License,
%% Version 2.0 (the "License"); you may not use this file
%% except in compliance with the License.  You may obtain
%% a copy of the License at