Commit b3c56c0b authored by Maurits van Rees's avatar Maurits van Rees

Minor fixes to new overview.

parent e90f3aa5
...@@ -63,12 +63,12 @@ ZODB transaction support: ...@@ -63,12 +63,12 @@ ZODB transaction support:
This allows transactions to span multiple ZODB databases and to span This allows transactions to span multiple ZODB databases and to span
ZODB and non-ZODB databases. ZODB and non-ZODB databases.
Other other notable ZODB features Other notable ZODB features
================================= ===========================
Pluggable layered storage Pluggable layered storage
ZODB has a pluggable storage architecture. This allows a variety of ZODB has a pluggable storage architecture. This allows a variety of
storage schemes including memory-based, file-based and distributes storage schemes including memory-based, file-based and distributed
(client-server) storage. Through storage layering, storage (client-server) storage. Through storage layering, storage
components provide compression, encryption, replication and more. components provide compression, encryption, replication and more.
...@@ -90,7 +90,7 @@ Testing is very easy. ...@@ -90,7 +90,7 @@ Testing is very easy.
database-related code very easy. database-related code very easy.
Time travel Time travel
ZODB storages typically add new records on write and removes old ZODB storages typically add new records on write and remove old
records on "pack" operations. This allows limited time travel, back records on "pack" operations. This allows limited time travel, back
to the last pack time. This can be very useful for forensic to the last pack time. This can be very useful for forensic
analysis. analysis.
...@@ -132,7 +132,7 @@ When the dominant access method is by accessing object attributes or by calling ...@@ -132,7 +132,7 @@ When the dominant access method is by accessing object attributes or by calling
technologies might be a better fit. technologies might be a better fit.
ZODB has no query language other than Python. It's primary support ZODB has no query language other than Python. It's primary support
for search is through mapping object called BTrees. People have for search is through mapping objects called BTrees. People have
build higher-level search APIs on top of ZODB. These work well build higher-level search APIs on top of ZODB. These work well
enough to support some search. enough to support some search.
...@@ -141,7 +141,7 @@ When you read data a lot more than you write it ...@@ -141,7 +141,7 @@ When you read data a lot more than you write it
fits) in memory, performance is very good because it rarely has to fits) in memory, performance is very good because it rarely has to
touch the database server. touch the database server.
If your application if very write heavy (e.g. logging), then you're If your application is very write heavy (e.g. logging), then you're
better off using something else. Sometimes, you can use a database better off using something else. Sometimes, you can use a database
suitable for heavy writes in combination with ZODB. suitable for heavy writes in combination with ZODB.
...@@ -172,13 +172,13 @@ When should you *not* use ZODB? ...@@ -172,13 +172,13 @@ When should you *not* use ZODB?
How does ZODB scale? How does ZODB scale?
==================== ====================
Note as well as many technologies, but some fairly large applications Not as well as many technologies, but some fairly large applications
have been built on ZODB. have been built on ZODB.
At Zope Corporation, several hundred newspaper content-management At Zope Corporation, several hundred newspaper content-management
systems and web sites were hosted using a multi-database configuration systems and web sites were hosted using a multi-database configuration
with most data in a main database and a catalog database. The with most data in a main database and a catalog database. The
databases has several hundred gigabytes of ordinary database records databases have several hundred gigabytes of ordinary database records
plus multiple terabytes of blob data. plus multiple terabytes of blob data.
ZODB is mature ZODB is mature
...@@ -215,7 +215,7 @@ Community and contributing ...@@ -215,7 +215,7 @@ Community and contributing
Discussion occurs on the `ZODB mailing list Discussion occurs on the `ZODB mailing list
<https://groups.google.com/forum/#!forum/zodb>`_. (And for the <https://groups.google.com/forum/#!forum/zodb>`_. (And for the
transaction system on the `transaction list transaction system on the `transaction list
<https://groups.google.com/forum/#!forum/python-transaction>`_ <https://groups.google.com/forum/#!forum/python-transaction>`_)
Bug reporting and feature requests are submitted through github issue Bug reporting and feature requests are submitted through github issue
trackers for various ZODB components: trackers for various ZODB components:
...@@ -224,7 +224,7 @@ trackers for various ZODB components: ...@@ -224,7 +224,7 @@ trackers for various ZODB components:
- `persistent <https://github.com/zopefoundation/persistent>`_ - `persistent <https://github.com/zopefoundation/persistent>`_
- `transactuon <https://github.com/zopefoundation/transaction>`_ - `transaction <https://github.com/zopefoundation/transaction>`_
- `BTrees <https://github.com/zopefoundation/BTrees>`_ - `BTrees <https://github.com/zopefoundation/BTrees>`_
......
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