$ ruby proto.rb | redis-cli -pipeĪll data transferred. We can run the program directly in pipe to redis-cli in order to perform ourįirst mass import session. In the above example, with this program: (0.1000).each")) Using the above function it is possible to easily generate the key value pairs Puts gen_redis_proto("SET","mykey","Hello World!").inspect The following Ruby function generates valid protocol: def gen_redis_proto(*cmd) Represented in the above way, one after the other. The file you need to generate for bulk loading is just composed of commands Or represented as a quoted string: "*3\r\n$3\r\nSET\r\n$3\r\nkey\r\n$5\r\nvalue\r\n" Where means "\r" (or ASCII character 13) and means "\n" (or ASCII character 10).įor instance the command SET key value is represented by the following protocol: *3 Protocol, but just that every command is represented in the following way: * The goal of bulk loading you don't need to understand every detail of the However in order to generate protocol for The Redis protocol is extremely simple to generate and parse, and isĭocumented here. The redis-cli utility will also make sure to only redirect errors receivedįrom the Redis instance to the standard output.
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That will produce an output similar to this: All data transferred. Using the pipe mode the command to run looks like the following: cat data.txt | redis-cli -pipe Supports a new mode called pipe mode that was designed in order to perform In 2.6 or later versions of Redis the redis-cli utility However this is not a very reliable way to perform mass import because netcatĭoes not really know when all the data was transferred and can't check forĮrrors. Netcat with the following command: (cat data.txt sleep 10) | nc localhost 6379 > /dev/null In the past the way to do this was to use the Once this file is created, the remaining action is to feed it to RedisĪs fast as possible. Of keys in the form: `keyN -> ValueN' I will create a file containing theįollowing commands in the Redis protocol format: SET Key0 Value0 In order to call the commands needed to insert the required data.įor instance if I need to generate a large data set where there are billions Redis is to generate a text file containing the Redis protocol, in raw format, For all of these reasons the preferred way to mass import data into Only a small percentage of clients support non-blocking I/O, and not all theĬlients are able to parse the replies in an efficient way in order to maximize Make sure you are inserting as fast as possible. You need to write new commands while you read replies at the same time to It is possible to use pipelining, but for bulk loading of many records Is slow because you have to pay for the round trip time for every command. Using a normal Redis client to perform bulk loading is not a good ideaįor a few reasons: the naive approach of sending one command after the other This document describes some strategies for bulk loading data in Redis. Ideally, you want to perform this operation quickly and efficiently. Writing data in bulk using the Redis protocolīulk loading is the process of loading Redis with a large amount of pre-existing data. Out-of-order / backfilled ingestion performance considerations.DataRecording.IRecordingVisualizer2 Interface.DataRecording.IRecordingVisualizer Interface.Read/Write Multiple Registers Rollout (response).In addition, use the Edit » Export Binary command to export the content of the individual packet in binary format. UNICODE Text Files Copy of the window content in text format in UNICODE (UTF-16 LE) encoding.
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ASCII Text Files Copy of the window content in text format in ASCII encoding. This format saves all the original formatting. In the latter case, you may select the format to use during exporting: HTML Files Export the content in HTML format. Execute the Edit » Export… command to export the selected content to a file.
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Otherwise, use the mouse to select a portion of the window.Įxecute the Edit » Copy command to copy the selected content to the Clipboard. If you plan to export the whole contents of the window, make sure you have no selection. First, you need to determine which part of the window you need to export. Mass Storage View visualizer allows the user to export its contents to various text file formats.