This is the Linux app named hashmap whose latest release can be downloaded as v1.0.8hashingimprovements.zip. It can be run online in the free hosting provider OnWorks for workstations.
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hashmap
DESCRIPTION
A Golang lock-free thread-safe HashMap optimized for fastest read access. It is not a general-use HashMap and currently has slow write performance for write-heavy use. The minimal supported Golang version is 1.19 as it makes use of Generics and the new atomic package helpers. Reading from the hash map for numeric key types in a thread-safe way is faster than reading from a standard Golang map in an unsafe way and four times faster than Golang's sync.Map. Technical design decisions have been made based on benchmarks that are stored in an external repository: go-benchmark. The library uses a sorted linked list and a slice as an index into that list. The Get() function contains helper functions that have been inlined manually until the Golang compiler will inline them automatically. It optimizes the slice access by circumventing the Golang size check when reading from the slice.
Features
- A Golang lock-free thread-safe HashMap optimized for fastest read access
- It is not a general-use HashMap and currently has slow write performance for write heavy uses
- The minimal supported Golang version is 1.19 as it makes use of Generics and the new atomic package helpers
- Use the map to count URL requests
- The library uses a sorted linked list and a slice as an index into that list
- For hashing, specialized xxhash implementations are used that match the size of the key type where available
Programming Language
Go
Categories
This is an application that can also be fetched from https://sourceforge.net/projects/hashmap.mirror/. It has been hosted in OnWorks in order to be run online in an easiest way from one of our free Operative Systems.
