Replace term Chronicle Map instance with Chronicle Map [data|key-value] store in specification, to reduce confusion

This commit is contained in:
leventov
2016-03-23 20:30:37 +07:00
parent 739796b90d
commit 8c4a5ef71b
8 changed files with 32 additions and 32 deletions
+9 -9
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@@ -28,8 +28,8 @@ applications. Notably trading, financial market applications.
https://en.wikipedia.org/wiki/Conflict-free_replicated_data_type) strategy.
**Unique features**
- Multiple processes could access a Chronicle Map instance concurrently. At the same time,
the instance is *in-process for each of the accessing processes*. (Out-of-process approach to IPC
- Multiple processes could access a Chronicle Map concurrently. At the same time,
the data store is *in-process for each of the accessing processes*. (Out-of-process approach to IPC
is simply incompatible with Chronicle Map's median latency target of < 1 μs.)
- Replication *without logs*, with constant footprint cost, guarantees progress even if the network
@@ -70,7 +70,7 @@ queries*.
e. g. [Chronicle Enterprise](http://chronicle.software/products/chronicle-enterprise/).
**What is the Chronicle Map's data structure?** In one sentence and simplified, a Chronicle Map
instance is a big chunk of shared memory (optionally mapped to disk), split into independent
data store is a big chunk of shared memory (optionally mapped to disk), split into independent
segments, each segment has an independent memory allocation for storing the entries, a hash table
for search, and a lock in shared memory (implemented via CAS loops) for managing concurrent access.
Read [the Chronicle Map data store design overview](spec/2-design-overview.md) for more.
@@ -159,7 +159,7 @@ Chronicle Map doesn't support
Functional changes in Chronicle Map 3:
- Chronicle Map 3 has [formal data store specification](spec), that verbalizes [the guarantees
which the data store provides](spec/1-design-goals.md#guarantees-2) and gives a way to verify those
which the data store provides](spec/1-design-goals.md#guarantees-1) and gives a way to verify those
guarantees.
- Added support for multi-key queries.
- "Listeners" mechanism fully reworked, see the [Behaviour Customization](#behaviour-customization)
@@ -169,11 +169,11 @@ Functional changes in Chronicle Map 3:
- "Stateless clients" functionality (i. e. remote calls) is moved to [Chronicle Engine](
https://github.com/OpenHFT/Chronicle-Engine).
- Replication is done via [Chronicle Engine](https://github.com/OpenHFT/Chronicle-Engine).
- Chronicle Map 2 has hard creation-time limit on the number of entries storable in the Chronicle
Map instance. If the size exceeds this limit, an exception is thrown. In Chronicle Map 3, this
limitation is removed, though the number of entries still has to be configured on the Chronicle Map
instance creation, exceeding this configured limit is possible, but discouraged. See the
[Number of entries configuration](#number-of-entries-configuration) section.
- Chronicle Map 2 has hard creation-time limit on the number of entries storable in a Chronicle
Map. If the size exceeds this limit, an exception is thrown. In Chronicle Map 3, this limitation
is removed, though the number of entries still has to be configured on the Chronicle Map creation,
exceeding this configured limit is possible, but discouraged. See the [Number of entries
configuration](#number-of-entries-configuration) section.
- Chronicle Map 3 supports [entry checksums](#entry-checksums) that allows to detect data
corruption, hence brings additional safety.
- Chronicle Map 3 allows to [recover](#recovery) after failures and corruptions.