Work out how much memory your keys need, check a config file before a restart, write ACL rules that do what you meant, test DynamoDB expressions, see what fills an etcd snapshot, and more for Redis, Valkey, DynamoDB and etcd. Every tool runs in your browser and nothing you paste leaves the page. The code is on GitHub.
14
Free tools so far, each built on one JavaScript file
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Sent anywhere. The tools send nothing, and their pages can't load anything from other sites
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Dependencies to install, in the browser or from the command line
Apache 2.0
License for all of the code
Each tool was checked against the real thing: 15 versions of Redis and Valkey built from source, DynamoDB Local, etcd and Kubernetes' own code, the AWS SDK or reference code. Its tests replay the recorded answers, and the results are on GitHub.
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Redis and Valkey ACL rules are short and easy to get wrong. +@all -flushall and -flushall +@all look alike and grant different things. %R~config:* reads but doesn’t …
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A Redis server reads its config file once, when it starts, and stops at the first line it can’t use. It prints that line and exits. Fix it, restart, and it stops at …
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A DynamoDB filter like status = :active looks harmless and fails every time: status is one of 563 reserved words, and DynamoDB refuses the request with a …
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Sometimes a few links have to sit next to your records: which service calls which, who follows whom, what an AI agent remembers about what. A graph database is one more …
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How much memory do fifty million sessions need? The usual answer is a test: load a sample, read INFO memory, multiply. That works for the version you tested, with the key …
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A Kubernetes cluster stops taking changes, and the API server reports etcdserver: mvcc: database space exceeded. etcd has hit its quota, 2 GiB unless someone raised it, …
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Five cache servers share 100,000 keys. Traffic grows, and you add a sixth. With the obvious rule, hash the key and divide by the number of servers, 83% of the keys now …
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Code that ran fine against a single Redis or Valkey server often breaks the day it moves to a cluster. An MGET, a MULTI block or a Lua script that touched three keys now …
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A key-value store has no tables and no schema to read. Everything sits in one flat list of keys, and the only structure is whatever people built into the names. After a …
If a small tool could save you a chore around Redis, Valkey, DynamoDB or another key-value store, write in and say what it should do.