alf: the atproto Latency Fabric
alf.fly.dev/
1 Apache License
2 Version 2.0, January 2004
3 http://www.apache.org/licenses/
4
5 TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
6
7 1. Definitions.
8
9 "License" shall mean the terms and conditions for use, reproduction,
10 and distribution as defined by Sections 1 through 9 of this document.
11
12 "Licensor" shall mean the copyright owner or entity authorized by
13 the copyright owner that is granting the License.
14
15 "Legal Entity" shall mean the union of the acting entity and all
16 other entities that control, are controlled by, or are under common
17 control with that entity. For the purposes of this definition,
18 "control" means (i) the power, direct or indirect, to cause the
19 direction or management of such entity, whether by contract or
20 otherwise, or (ii) ownership of fifty percent (50%) or more of the
21 outstanding shares, or (iii) beneficial ownership of such entity.
22
23 "You" (or "Your") shall mean an individual or Legal Entity
24 exercising permissions granted by this License.
25
26 "Source" form shall mean the preferred form for making modifications,
27 including but not limited to software source code, documentation
28 source, and configuration files.
29
30 "Object" form shall mean any form resulting from mechanical
31 transformation or translation of a Source form, including but
32 not limited to compiled object code, generated documentation,
33 and conversions to other media types.
34
35 "Work" shall mean the work of authorship made available under
36 the License, as indicated by a copyright notice that is included in
37 or attached to the work (an example is provided in the Appendix below).
38
39 "Derivative Works" shall mean any work, whether in Source or Object
40 form, that is based on (or derived from) the Work and for which the
41 editorial revisions, annotations, elaborations, or other modifications
42 represent, as a whole, an original work of authorship. For the purposes
43 of this License, Derivative Works shall not include works that remain
44 separable from, or merely link (or bind by name) to the interfaces of,
45 the Work and Derivative Works thereof.
46
47 "Contribution" shall mean, as submitted to the Licensor for inclusion
48 in the Work by the copyright owner or by an individual or Legal Entity
49 authorized to submit on behalf of the copyright owner. For the purposes
50 of this definition, "submitted" means any form of electronic, verbal,
51 or written communication sent to the Licensor or its representatives,
52 including but not limited to communication on electronic mailing lists,
53 source code control systems, and issue tracking systems that are managed
54 by, or on behalf of, the Licensor for the purpose of discussing and
55 improving the Work, but excluding communication that is conspicuously
56 marked or designated in writing by the copyright owner as "Not a
57 Contribution."
58
59 "Contributor" shall mean Licensor and any Legal Entity on behalf of
60 whom a Contribution has been received by the Licensor and included
61 within the Work.
62
63 2. Grant of Copyright License. Subject to the terms and conditions of
64 this License, each Contributor hereby grants to You a perpetual,
65 worldwide, non-exclusive, no-charge, royalty-free, irrevocable
66 copyright license to reproduce, prepare Derivative Works of,
67 publicly display, publicly perform, sublicense, and distribute the
68 Work and such Derivative Works in Source or Object form.
69
70 3. Grant of Patent License. Subject to the terms and conditions of
71 this License, each Contributor hereby grants to You a perpetual,
72 worldwide, non-exclusive, no-charge, royalty-free, irrevocable
73 (except as stated in this section) patent license to make, have made,
74 use, offer to sell, sell, import, and otherwise transfer the Work,
75 where such license applies only to those patent claims licensable
76 by such Contributor that are necessarily infringed by their
77 Contribution(s) alone or by the combination of their Contribution(s)
78 with the Work to which such Contribution(s) was submitted. If You
79 institute patent litigation against any entity (including a cross-claim
80 or counterclaim in a lawsuit) alleging that the Work or any Contribution
81 embodied within the Work constitutes direct or contributory patent
82 infringement, then any patent licenses granted to You under this License
83 for that Work shall terminate as of the date such litigation is filed.
84
85 4. Redistribution. You may reproduce and distribute copies of the
86 Work or Derivative Works thereof in any medium, with or without
87 modifications, and in Source or Object form, provided that You
88 meet the following conditions:
89
90 (a) You must give any other recipients of the Work or Derivative
91 Works a copy of this License; and
92
93 (b) You must cause any modified files to carry prominent notices
94 stating that You changed the files; and
95
96 (c) You must retain, in the Source form of any Derivative Works
97 that You distribute, all copyright, patent, trademark, and
98 attribution notices from the Source form of the Work,
99 excluding those notices that do not pertain to any part of
100 the Derivative Works; and
101
102 (d) If the Work includes a "NOTICE" text file as part of its
103 distribution, You must include a readable copy of the
104 attribution notices contained within such NOTICE file, in
105 at least one of the following places: within a NOTICE text
106 file distributed as part of the Derivative Works; within
107 the Source form or documentation, if provided along with the
108 Derivative Works; or, within a display generated by the
109 Derivative Works, if and wherever such third-party notices
110 normally appear. The contents of the NOTICE file are for
111 informational purposes only and do not modify the License.
112 You may add Your own attribution notices within Derivative
113 Works that You distribute, alongside or in addition to the
114 NOTICE text from the Work, provided that such additional
115 attribution notices cannot be construed as modifying the License.
116
117 5. Submission of Contributions. Unless You explicitly state otherwise,
118 any Contribution intentionally submitted for inclusion in the Work
119 by You to the Licensor shall be under the terms and conditions of
120 this License, without any additional terms or conditions.
121 Notwithstanding the above, nothing herein shall supersede or modify
122 the terms of any separate license agreement you may have executed
123 with Licensor regarding such Contributions.
124
125 6. Trademarks. This License does not grant permission to use the trade
126 names, trademarks, service marks, or product names of the Licensor,
127 except as required for reasonable and customary use in describing the
128 origin of the Work and reproducing the content of the NOTICE file.
129
130 7. Disclaimer of Warranty. Unless required by applicable law or
131 agreed to in writing, Licensor provides the Work (and each
132 Contributor provides its Contributions) on an "AS IS" BASIS,
133 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
134 implied, including, without limitation, any warranties or conditions
135 of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
136 PARTICULAR PURPOSE. You are solely responsible for determining the
137 appropriateness of using or reproducing the Work and assume any
138 risks associated with Your exercise of permissions under this License.
139
140 8. Limitation of Liability. In no event and under no legal theory,
141 whether in tort (including negligence), contract, or otherwise,
142 unless required by applicable law (such as deliberate and grossly
143 negligent acts) or agreed to in writing, shall any Contributor be
144 liable to You for damages, including any direct, indirect, special,
145 incidental, or exemplary damages of any character arising as a
146 result of this License or out of the use or inability to use the
147 Work (including but not limited to damages for loss of goodwill,
148 work stoppage, computer failure or malfunction, or all other
149 commercial damages or losses), even if such Contributor has been
150 advised of the possibility of such damages.
151
152 9. Accepting Warranty or Liability. While redistributing the Work or
153 Derivative Works thereof, You may choose to offer, and charge a fee
154 for, acceptance of support, warranty, indemnity, or other liability
155 obligations and/or rights consistent with this License. However, in
156 accepting such obligations, You may offer such obligations only on
157 Your own behalf and on Your sole responsibility, not on behalf of
158 any other Contributor, and only if You agree to indemnify, defend,
159 and hold each Contributor harmless for any liability incurred by,
160 or claims asserted against, such Contributor by reason of your
161 accepting any such warranty or additional liability.
162
163 END OF TERMS AND CONDITIONS
164
165 Copyright 2026 New Public
166
167 Licensed under the Apache License, Version 2.0 (the "License");
168 you may not use this file except in compliance with the License.
169 You may obtain a copy of the License at
170
171 http://www.apache.org/licenses/LICENSE-2.0
172
173 Unless required by applicable law or agreed to in writing, software
174 distributed under the License is distributed on an "AS IS" BASIS,
175 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
176 implied. See the License for the specific language governing
177 permissions and limitations under the License.